ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P 8-bit Atmel Microcontroller with 16/32/64KB In-System Programmable Flash DATASHEET SUMMARY Features • High performance, low power Atmel® AVR® 8-Bit Microcontroller • Advanced RISC architecture – 130 powerful instructions – most single clock cycle execution – 32 × 8 general purpose working registers – Fully static operation – Up to 16MIPS throughput at 16MHz (Atmel ATmega165PA/645P) – Up to 20MIPS throughput at 20MHz (Atmel ATmega165A/325A/325PA/645A/3250A/3250PA/6450A/6450P) – On-chip 2-cycle multiplier • High endurance non-volatile memory segments – In-system self-programmable flash program memory • 16KBytes (ATmega165A/ATmega165PA) • 32KBytes (ATmega325A/ATmega325PA/ATmega3250A/ATmega3250PA) • 64KBytes (ATmega645A/ATmega645P/ATmega6450A/ATmega6450P) – EEPROM • 512Bytes (ATmega165A/ATmega165PA) • 1Kbytes (ATmega325A/ATmega325PA/ATmega3250A/ATmega3250PA) • 2Kbytes (ATmega645A/ATmega645P/ATmega6450A/ATmega6450P) – Internal SRAM • 1KBytes (ATmega165A/ATmega165PA) • 2KBytes (ATmega325A/ATmega325PA/ATmega3250A/ATmega3250PA) • 4KBytes (ATmega645A/ATmega645P/ATmega6450A/ATmega6450P) – Write/erase cycles: 10,000 flash/100,000 EEPROM – Data retention: 20 years at 85°C/100 years at 25°C (1) – Optional Boot Code Section with Independent Lock Bits • In-System Programming by On-chip Boot Program • True read-while-write operation – Programming lock for software security • Atmel QTouch® library support – Capacitive touch buttons, sliders and wheels – Atmel QTouch and QMatrix acquisition – Up to 64 sense channels • JTAG (IEEE std. 1149.1 compliant) interface – Boundary-scan capabilities according to the JTAG standard – Extensive on-chip debug support – Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface • Peripheral Features – Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode – One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode – Real time counter with separate oscillator – Four PWM channels – 8-channel, 10-bit ADC Atmel-8285FS-AVR-ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P-Datasheet_08/2014

– Programmable serial USART – Master/Slave SPI Serial Interface – Universal Serial Interface with Start Condition detector – Programmable Watchdog Timer with separate on-chip oscillator – On-chip Analog Comparator – Interrupt and Wake-up on pin change • Special microcontroller features – Power-on reset and programmable Brown-out detection – Internal calibrated oscillator – External and internal interrupt sources – Five sleep modes: Idle, ADC Noise Reduction, Power-save, Power-down and Standby • I/O and packages – 54/69 programmable I/O lines – 64/100-lead TQFP, 64-pad QFN/MLF and 64-pad DRQFN • Speed grade: – ATmega 165A/165PA/645A/645P: 0 - 16MHz @ 1.8 - 5.5V – ATmega325A/325PA/3250A/3250PA/6450A/6450P: 0 - 20MHz @ 1.8 - 5.5V • Temperature range: – -40°C to 85°C industrial • Ultra-low power consumption (picoPower® devices) – Active mode: • 1MHz, 1.8V: 215µA • 32kHz, 1.8V: 8µA (including oscillator) – Power-down mode: 0.1µA at 1.8V – Power-save mode: 0.6µA at 1.8V (Including 32kHz RTC) Note: 1. Reliability Qualification results show that the projected data retention failure rate is much less than 1 PPM over 20 years at 85°C or 100 years at 25°C. ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 2 Atmel-8285FS–AVR-ATmega–08/2014

1. Pin configurations 1.1 Pinout - TQFP and QFN/MLF Figure 1-1. 64A (TQFP)and 64M1 (QFN/MLF) pinout Atmel ATmega165A/ATmega165PA/ATmega325A/ATmega325PA/ATmega645A/ATmega645P. CK) MS) DO) DI) T T T T 0) 1) 2) 3) 4/ 5/ 6/ 7/ C C C C C C C C D D D D D D D D VCC ND REF F0 (A F1 (A F2 (A F3 (A F4 (A F5 (A F6 (A F7 (A ND CC A0 A1 A2 A G A P P P P P P P P G V P P P 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 6 6 6 6 6 5 5 5 5 5 5 5 5 5 5 4 DNC 1 48 PA3 (RXD/PCINT0) PE0 2 47 PA4 INDEX CORNER (TXD/PCINT1) PE1 3 46 PA5 (XCK/AIN0/PCINT2) PE2 4 45 PA6 (AIN1/PCINT3) PE3 5 44 PA7 (USCK/SCL/PCINT4) PE4 6 43 PG2 (DI/SDA/PCINT5) PE5 7 42 PC7 (DO/PCINT6) PE6 8 41 PC6 (CLKO/PCINT7) PE7 9 40 PC5 (SS/PCINT8) PB0 10 39 PC4 (SCK/PCINT9) PB1 11 38 PC3 (MOSI/PCINT10) PB2 12 37 PC2 (MISO/PCINT11) PB3 13 36 PC1 (OC0A/PCINT12) PB4 14 35 PC0 (OC1A/PCINT13) PB5 15 34 PG1 (OC1B/PCINT14) PB6 16 33 PG0 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3 3 7 3 4 5 C D 2 1 0 1 2 3 4 5 6 7 B G G G C N L L D D D D D D D D T15) P (T1) P (T0) P SET/P V G 2) XTA 1) XTA CP1) P NT0) P P P P P P P CIN RE SC SC (I (I P O O A/ (T (T 2 C O ( Note: The large center pad underneath the QFN/MLF packages is made of metal and internally connected to GND. It should be soldered or glued to the board to ensure good mechanical stability. If the center pad is left unconnected, the package might loosen from the board. ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 3 Atmel-8285FS–AVR-ATmega–08/2014

1.2 Pinout - 100A (TQFP) Figure 1-2. Pinout Atmel ATmega3250A/ATmega3250PA/ATmega6450A/ATmega6450P. TQFP CK) MS) DO) DI) 3) 2) 1) 0) DC0) DC1) DC2) DC3) DC4/T DC5/T DC6/T DC7/T CINT2 CINT2 CINT2 CINT2 AVCC AGND AREF PF0 (A PF1 (A PF2 (A PF3 (A PF4 (A PF5 (A PF6 (A PF7 (A DNC DNC PH7 (P PH6 (P PH5 (P PH4 (P DNC DNC GND VCC DNC PA0 PA1 PA2 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 DNC 1 75 PA3 (RXD/PCINT0) PE0 2 74 PA4 (TXD/PCINT1) PE1 3 INDEX CORNER 73 PA5 (XCK/AIN0/PCINT2) PE2 4 72 PA6 (AIN1/PCINT3) PE3 5 71 PA7 (USCK/SCL/PCINT4) PE4 6 70 PG2 (DI/SDA/PCINT5) PE5 7 69 PC7 (DO/PCINT6) PE6 8 68 PC6 (CLKO/PCINT7) PE7 9 67 DNC VCC 10 66 PH3 (PCINT19) GND 11 65 PH2 (PCINT18) DNC 12 64 PH1 (PCINT17) (PCINT24) PJ0 13 63 PH0 (PCINT16) (PCINT25) PJ1 14 62 DNC DNC 15 61 DNC DNC 16 60 DNC DNC 17 59 DNC DNC 18 58 PC5 (SS/PCINT8) PB0 19 57 PC4 (SCK/PCINT9) PB1 20 56 PC3 (MOSI/PCINT10) PB2 21 55 PC2 (MISO/PCINT11) PB3 22 54 PC1 (OC0A/PCINT12) PB4 23 53 PC0 (OC1A/PCINT13) PB5 24 52 PG1 (OC1B/PCINT14) PB6 25 51 PG0 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 2 2 2 2 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 5 7 C 3 4 5 C D 2 1 C C 2 3 4 5 6 C 0 1 2 3 4 5 6 7 A/PCINT15) PB DN (T1) PG (T0) PG RESET/PG VC GN (TOSC2) XTAL (TOSC1) XTAL DN DN (PCINT26) PJ (PCINT27) PJ (PCINT28) PJ (PCINT29) PJ (PCINT30) PJ DN (ICP1) PD (INT0) PD PD PD PD PD PD PD 2 C O ( ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 4 Atmel-8285FS–AVR-ATmega–08/2014

2. Overview The Atmel ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, this microcontroller achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed. 2.1 Block diagram Figure 2-1. Block diagram. GND VCC PF0 - PF7 PA0 - PA7 PC0 - PC7 XTAL1 XTAL2 PORTF DRIVERS PORTA DRIVERS PORTC DRIVERS DATAREGISTER DATADIR. DATAREGISTER DATADIR. DATAREGISTER DATADIR. PORTF REG.PORTF PORTA REG.PORTA PORTC REG.PORTC 8-BIT DATA BUS AVCC AGND ADC INTERNAL CALIB. OSC AREF OSCILLATOR OSCILLATOR JTAG TAP PCROOUGNRTAEMR PSOTINACTEKR WATTICMHEDROG TIMING AND H CONTROL DIR.ORT PH0 - PH7 PORTH DRIVERS DATAATAREGISTERREG.PPORTH OPNRBO-OCGLUHSORNICPAGDA MDIANCEMRBYIN-U GG ININPRSDSRETFETOGRLRCUAGISUOSCRTCDHTAETEIMROIRONN RPGEUEGSRNRISPXYZEATORMESARELS MCICNRUOTET UEUGCIMRNNOISERTINTTREUTER/PRRSTOL D DIR.ORTJ COLNINTERSOL ALU EEPROM RESET ERS DATAREG.P AVR CPU RSETGAISTUTESR PJ0 PJ6 PORTJ DRIV ATAREGISTERPORTJ USART SERUIANLI VINETRESRAFLACE SPI D R O ANALOGOMPARAT +- DATAPROERGTIESTER RDEAGT.APODRIRT.E DATAPROERGTIBSTER RDEAGT.APODRIRT.B DATAPROERGTDISTER RDEAGT.APODRIRT.D DAPTOARRTEGG. RDEAGTA.PDOIRR.TG C PORTE DRIVERS PORTB DRIVERS PORTD DRIVERS PORTG DRIVERS PE0 - PE7 PB0 - PB7 PD0 - PD7 PG0 - PG4 The AVR core combines a rich instruction set with 32 general purpose working registers. All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in one single instruction executed in one clock cycle. The resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers. ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 5 Atmel-8285FS–AVR-ATmega–08/2014

The Atmel ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P provides the following features: 16K/32K/64K bytes of In-System Programmable Flash with Read-While-Write capabilities, 512/1K/2K bytes EEPROM, 1K/2K/4K byte SRAM, 54/69general purpose I/O lines, 32 general purpose working registers, a JTAG interface for Boundary-scan, On-chip Debugging support and programming, three flexible Timer/Counters with compare modes, internal and external interrupts, a serial programmable USART, Universal Serial Interface with Start Condition Detector, an 8-channel, 10-bit ADC, a programmable Watchdog Timer with internal Oscillator, an SPI serial port, and five software selectable power saving modes. The Idle mode stops the CPU while allowing the SRAM, Timer/Counters, SPI port, and interrupt system to continue functioning. The Power-down mode saves the register contents but freezes the Oscillator, disabling all other chip functions until the next interrupt or hardware reset. In Power-save mode, the asynchronous timer continues to run, allowing the user to maintain a timer base while the rest of the device is sleeping. The ADC Noise Reduction mode stops the CPU and all I/O modules except asynchronous timer and ADC, to minimize switching noise during ADC conversions. In Standby mode, the XTAL/resonator Oscillator is running while the rest of the device is sleeping. This allows very fast start-up combined with low-power consumption. Atmel offers the QTouch® library for embedding capacitive touch buttons, sliders and wheels functionality into AVR microcontrollers. The patented charge-transfer signal acquisition offers robust sensing and includes fully debounced reporting of touch keys and includes Adjacent Key Suppression® (AKS®) technology for unambiguous detection of key events. The easy-to-use QTouch Suite toolchain allows you to explore, develop and debug your own touch applications. The device is manufactured using Atmel’s high density non-volatile memory technology. The On-chip ISP Flash allows the program memory to be reprogrammed In-System through an SPI serial interface, by a conventional non-volatile memory programmer, or by an On-chip Boot program running on the AVR core. The Boot program can use any interface to download the application program in the Application Flash memory. Software in the Boot Flash section will continue to run while the Application Flash section is updated, providing true Read- While-Write operation. By combining an 8-bit RISC CPU with In-System Self-Programmable Flash on a monolithic chip, the Atmel devise is a powerful microcontroller that provides a highly flexible and cost effective solution to many embedded control applications. The ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P AVR is supported with a full suite of program and system development tools including: C Compilers, Macro Assemblers, Program Debugger/Simulators, In-Circuit Emulators, and Evaluation kits. ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 6 Atmel-8285FS–AVR-ATmega–08/2014

2.2 Comparison between Atmel ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P Table 2-1. Differences between: ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P. Device Flash EEPROM RAM MHz ATmega165A 16Kbyte 512Bytes 1Kbyte 16 ATmega165PA 16Kbyte 512Bytes 1Kbyte 16 ATmega325A 32Kbyte 1Kbyte 2Kbyte 20 ATmega325PA 32Kbyte 1Kbyte 2Kbyte 20 ATmega3250A 32Kbytes 1Kbyte 2Kbyte 20 ATmega3250PA 32Kbyte 1Kbyte 2Kbyte 20 ATmega645A 64Kbyte 2Kbyte 4Kbyte 16 ATmega645P 64Kbyte 2Kbyte 4Kbyte 16 ATmega6450A 64Kbyte 2Kbyte 4Kbyte 20 ATmega6450P 64Kbyte 2Kbyte 4Kbyte 20 2.3 Pin descriptions 2.3.1 VCC Digital supply voltage. 2.3.2 GND Ground. 2.3.3 Port A (PA7:PA0) Port A is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port A output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port A pins that are externally pulled low will source current if the pull-up resistors are activated. The Port A pins are tri- stated when a reset condition becomes active, even if the clock is not running. Port A also serves the functions of various special features of the ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P as listed on ”Alternate functions of Port B” on page 73. 2.3.4 Port B (PB7:PB0) Port B is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port B output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port B pins that are externally pulled low will source current if the pull-up resistors are activated. The Port B pins are tri- stated when a reset condition becomes active, even if the clock is not running. Port B has better driving capabilities than the other ports. Port B also serves the functions of various special features of the ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P as listed on ”Alternate functions of Port B” on page 73. 2.3.5 Port C (PC7:PC0) Port C is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port C output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port C pins ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 7 Atmel-8285FS–AVR-ATmega–08/2014

that are externally pulled low will source current if the pull-up resistors are activated. The Port C pins are tri- stated when a reset condition becomes active, even if the clock is not running. Port C also serves the functions of special features of the Atmel ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P as listed on ”Alternate functions of Port D” on page 75. 2.3.6 Port D (PD7:PD0) Port D is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port D output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port D pins that are externally pulled low will source current if the pull-up resistors are activated. The Port D pins are tri- stated when a reset condition becomes active, even if the clock is not running. Port D also serves the functions of various special features of the ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P as listed on ”Alternate functions of Port D” on page 75. 2.3.7 Port E (PE7:PE0) Port E is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port E output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port E pins that are externally pulled low will source current if the pull-up resistors are activated. The Port E pins are tri- stated when a reset condition becomes active, even if the clock is not running. Port E also serves the functions of various special features of the ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P as listed on ”Alternate functions of Port E” on page 76. 2.3.8 Port F (PF7:PF0) Port F serves as the analog inputs to the A/D Converter. Port F also serves as an 8-bit bi-directional I/O port, if the A/D Converter is not used. Port pins can provide internal pull-up resistors (selected for each bit). The Port F output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port F pins that are externally pulled low will source current if the pull-up resistors are activated. The Port F pins are tri-stated when a reset condition becomes active, even if the clock is not running. If the JTAG interface is enabled, the pull-up resistors on pins PF7(TDI), PF5(TMS), and PF4(TCK) will be activated even if a reset occurs. Port F also serves the functions of the JTAG interface, see ”Alternate functions of Port F” on page 78. 2.3.9 Port G (PG5:PG0) Port G is a 6-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port G output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port G pins that are externally pulled low will source current if the pull-up resistors are activated. The Port G pins are tri- stated when a reset condition becomes active, even if the clock is not running. Port G also serves the functions of various special features of the ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P as listed on page 80. 2.3.10 Port H (PH7:PH0) Port H is a 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port H output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port H pins that are externally pulled low will source current if the pull-up resistors are activated. The Port H pins are tri- stated when a reset condition becomes active, even if the clock is not running. Port H also serves the functions of various special features of the ATmega3250A/3250PA/6450A/6450P as listed on page 81. ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 8 Atmel-8285FS–AVR-ATmega–08/2014

2.3.11 Port J (PJ6:PJ0) Port J is a 7-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port J output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port J pins that are externally pulled low will source current if the pull-up resistors are activated. The Port J pins are tri- stated when a reset condition becomes active, even if the clock is not running. Port J also serves the functions of various special features of the Atmel ATmega3250A/3250PA/6450A/6450P as listed on page 83. 2.3.12 RESET Reset input. A low level on this pin for longer than the minimum pulse length will generate a reset, even if the clock is not running. The minimum pulse length is given in Table 28-13 on page 304. Shorter pulses are not guaranteed to generate a reset. 2.3.13 XTAL1 Input to the inverting Oscillator amplifier and input to the internal clock operating circuit. 2.3.14 XTAL2 Output from the inverting Oscillator amplifier. 2.3.15 AVCC AVCC is the supply voltage pin for Port F and the A/D Converter. It should be externally connected to V , even CC if the ADC is not used. If the ADC is used, it should be connected to V through a low-pass filter. CC 2.3.16 AREF This is the analog reference pin for the A/D Converter. ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 9 Atmel-8285FS–AVR-ATmega–08/2014

3. Resources A comprehensive set of development tools, application notes and datasheets are available for download on http://www.atmel.com/avr. 4. Data retention Reliability Qualification results show that the projected data retention failure rate is much less than 1 PPM over 20 years at 85°C or 100 years at 25°C. 5. About code examples This documentation contains simple code examples that briefly show how to use various parts of the device. Be aware that not all C compiler vendors include bit definitions in the header files and interrupt handling in C is compiler dependent. Please confirm with the C compiler documentation for more details. These code examples assume that the part specific header file is included before compilation. For I/O registers located in extended I/O map, "IN", "OUT", "SBIS", "SBIC", "CBI", and "SBI" instructions must be replaced with instructions that allow access to extended I/O. Typically "LDS" and "STS" combined with "SBRS", "SBRC", "SBR", and "CBR". 6. Capacitive touch sensing The Atmel QTouch Library provides a simple to use solution to realize touch sensitive interfaces on most Atmel AVR microcontrollers. The QTouch Library includes support for the Atmel QTouch and QMatrix acquisition methods. Touch sensing can be added to any application by linking the appropriate Atmel QTouch Library for the AVR Microcontroller. This is done by using a simple set of APIs to define the touch channels and sensors, and then calling the touch sensing API’s to retrieve the channel information and determine the touch sensor states. The QTouch Library is FREE and downloadable from the Atmel website at the following location: www.atmel.com/qtouchlibrary. For implementation details and other information, refer to the Atmel QTouch Library User Guide - also available for download from the Atmel website. ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 10 Atmel-8285FS–AVR-ATmega–08/2014

7. Register Summary Note: Registers with bold type only available in ATmega3250A/3250PA/6450A/6450P. Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page (0xFF) Reserved (0xFE) Reserved (0xFD) Reserved (0xFC) Reserved (0xFB) Reserved (0xFA) Reserved (0xF9) Reserved (0xF8) Reserved (0xF7) Reserved (0xF6) Reserved (0xF5) Reserved (0xF4) Reserved (0xF3) Reserved (0xF2) Reserved (0xF1) Reserved (0xF0) Reserved (0xEF) Reserved (0xEE) Reserved (0xED) Reserved (0xEC) Reserved (0xEB) Reserved - - - - - - - - (0xEA) Reserved - - - - - - - - (0xE9) Reserved - - - - - - - - (0xE8) Reserved - - - - - - - - (0xE7) Reserved (0xE6) Reserved (0xE5) Reserved (0xE4) Reserved (0xE3) Reserved - - - - - - - - (0xE2) Reserved - - - - - - - - (0xE1) Reserved - - - - - - - - (0xE0) Reserved - - - - - - - - (0xDF) Reserved - - - - - - - - (0xDE) Reserved - - - - - - - - (0xDD) PORTJ - PORTJ6 PORTJ5 PORTJ4 PORTJ3 PORTJ2 PORTJ1 PORTJ0 88 (0xDC) DDRJ - DDJ6 DDJ5 DDJ4 DDJ3 DDJ2 DDJ1 DDJ0 88 (0xDB) PINJ - PINJ6 PINJ5 PINJ4 PINJ3 PINJ2 PINJ1 PINJ0 88 (0xDA) PORTH PORTH7 PORTH6 PORTH5 PORTH4 PORTH3 PORTH2 PORTH1 PORTH0 87 (0xD9) DDRH DDH7 DDH6 DDH5 DDH4 DDH3 DDH2 DDH1 DDH0 87 (0xD8) PINH PINH7 PINH6 PINH5 PINH4 PINH3 PINH2 PINH1 PINH0 88 (0xD7) Reserved - - - - - - - - (0xD6) Reserved - - - - - - - - (0xD5) Reserved - - - - - - - - (0xD4) Reserved - - - - - - - - (0xD3) Reserved - - - - - - - - (0xD2) Reserved - - - - - - - - (0xD1) Reserved - - - - - - - - (0xD0) Reserved - - - - - - - - (0xCF) Reserved - - - - - - - - (0xCE) Reserved - - - - - - - - (0xCD) Reserved - - - - - - - - (0xCC) Reserved - - - - - - - - (0xCB) Reserved - - - - - - - - (0xCA) Reserved - - - - - - - - (0xC9) Reserved - - - - - - - - (0xC8) Reserved - - - - - - - - (0xC7) Reserved - - - - - - - - (0xC6) UDR0 USART0 Data Register 178 (0xC5) UBRR0H USART0 Baud Rate Register High 182 ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 11 Atmel-8285FS–AVR-ATmega–08/2014

Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page (0xC4) UBRR0L USART0 Baud Rate Register Low 182 (0xC3) Reserved - - - - - - - - (0xC2) UCSR0C - UMSEL0 UPM01 UPM00 USBS0 UCSZ01 UCSZ00 UCPOL0 180 (0xC1) UCSR0B RXCIE0 TXCIE0 UDRIE0 RXEN0 TXEN0 UCSZ02 RXB80 TXB80 179 (0xC0) UCSR0A RXC0 TXC0 UDRE0 FE0 DOR0 UPE0 U2X0 MPCM0 178 (0xBF) Reserved - - - - - - - - (0xBE) Reserved - - - - - - - - (0xBD) Reserved - - - - - - - - (0xBC) Reserved - - - - - - - - (0xBB) Reserved - - - - - - - - (0xBA) USIDR USI Data Register 190 (0xB9) USISR USISIF USIOIF USIPF USIDC USICNT3 USICNT2 USICNT1 USICNT0 190 (0xB8) USICR USISIE USIOIE USIWM1 USIWM0 USICS1 USICS0 USICLK USITC 191 (0xB7) Reserved - - - - - - - - (0xB6) ASSR - - - EXCLK AS2 TCN2UB OCR2UB TCR2UB 146 (0xB5) Reserved - - - - - - - - (0xB4) Reserved - - - - - - - - (0xB3) OCR2A Timer/Counter 2 Output Compare Register A 145 (0xB2) TCNT2 Timer/Counter2 144 (0xB1) Reserved - - - - - - - - (0xB0) TCCR2A FOC2A WGM20 COM2A1 COM2A0 WGM21 CS22 CS21 CS20 143 (0xAF) Reserved - - - - - - - - (0xAE) Reserved - - - - - - - - (0xAD) Reserved - - - - - - - - (0xAC) Reserved - - - - - - - - (0xAB) Reserved - - - - - - - - (0xAA) Reserved - - - - - - - - (0xA9) Reserved - - - - - - - - (0xA8) Reserved - - - - - - - - (0xA7) Reserved - - - - - - - - (0xA6) Reserved - - - - - - - - (0xA5) Reserved - - - - - - - - (0xA4) Reserved - - - - - - - - (0xA3) Reserved - - - - - - - - (0xA2) Reserved - - - - - - - - (0xA1) Reserved - - - - - - - - (0xA0) Reserved - - - - - - - - (0x9F) Reserved - - - - - - - - (0x9E) Reserved - - - - - - - - (0x9D) Reserved - - - - - - - - (0x9C) Reserved - - - - - - - - (0x9B) Reserved - - - - - - - - (0x9A) Reserved - - - - - - - - (0x99) Reserved - - - - - - - - (0x98) Reserved - - - - - - - - (0x97) Reserved - - - - - - - - (0x96) Reserved - - - - - - - - (0x95) Reserved - - - - - - - - (0x94) Reserved - - - - - - - - (0x93) Reserved - - - - - - - - (0x92) Reserved - - - - - - - - (0x91) Reserved - - - - - - - - (0x90) Reserved - - - - - - - - (0x8F) Reserved - - - - - - - - (0x8E) Reserved - - - - - - - - (0x8D) Reserved - - - - - - - - (0x8C) Reserved - - - - - - - - (0x8B) OCR1BH Timer/Counter1 Output Compare Register B High 126 (0x8A) OCR1BL Timer/Counter1 Output Compare Register B Low 126 (0x89) OCR1AH Timer/Counter1 Output Compare Register A High 126 (0x88) OCR1AL Timer/Counter1 Output Compare Register A Low 126 (0x87) ICR1H Timer/Counter1 Input Capture Register High 126 (0x86) ICR1L Timer/Counter1 Input Capture Register Low 126 (0x85) TCNT1H Timer/Counter1 High 126 (0x84) TCNT1L Timer/Counter1 Low 126 ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 12 Atmel-8285FS–AVR-ATmega–08/2014

Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page (0x83) Reserved – – – – – – – – (0x82) TCCR1C FOC1A FOC1B – – – – – – 125 (0x81) TCCR1B ICNC1 ICES1 – WGM13 WGM12 CS12 CS11 CS10 124 (0x80) TCCR1A COM1A1 COM1A0 COM1B1 COM1B0 – – WGM11 WGM10 122 (0x7F) DIDR1 – – – – – – AIN1D AIN0D 197 (0x7E) DIDR0 ADC7D ADC6D ADC5D ADC4D ADC3D ADC2D ADC1D ADC0D 215 (0x7D) Reserved – – – – – – – – (0x7C) ADMUX REFS1 REFS0 ADLAR MUX4 MUX3 MUX2 MUX1 MUX0 211 (0x7B) ADCSRB – ACME – – – ADTS2 ADTS1 ADTS0 214 (0x7A) ADCSRA ADEN ADSC ADATE ADIF ADIE ADPS2 ADPS1 ADPS0 213 (0x79) ADCH ADC Data Register High 214 (0x78) ADCL ADC Data Register Low 214 (0x77) Reserved – – – – – – – – (0x76) Reserved – – – – – – – – (0x75) Reserved – – – – – – – – (0x74) Reserved – – – – – – – – (0x73) PCMSK3 – PCINT30 PCINT29 PCINT28 PCINT27 PCINT26 PCINT25 PCINT24 63 (0x72) Reserved – – – – – – – – (0x71) Reserved – – – – – – – – (0x70) TIMSK2 – – – – – – OCIE2A TOIE2 145 (0x6F) TIMSK1 – - ICIE1 – – OCIE1B OCIE1A TOIE1 127 (0x6E) TIMSK0 – – – – – – OCIE0A TOIE0 101 (0x6D) PCMSK2 PCINT23 PCINT22 PCINT21 PCINT20 PCINT19 PCINT18 PCINT17 PCINT16 63 (0x6C) PCMSK1 PCINT15 PCINT14 PCINT13 PCINT12 PCINT11 PCINT10 PCINT9 PCINT8 63 (0x6B) PCMSK0 PCINT7 PCINT6 PCINT5 PCINT4 PCINT3 PCINT2 PCINT1 PCINT0 63 (0x6A) Reserved – – – – – – – – (0x69) EICRA – – – – – – ISC01 ISC00 61 (0x68) Reserved – – – – – – – – (0x67) Reserved – – – – – – – – (0x66) OSCCAL Oscillator Calibration Register [CAL7:0] 36 (0x65) Reserved – – – – – – – – (0x64) PRR – – – – PRTIM1 PRSPI PSUSART0 PRADC 43 (0x63) Reserved – – – – – – – – (0x62) Reserved – – – – – – – – (0x61) CLKPR CLKPCE – – – CLKPS3 CLKPS2 CLKPS1 CLKPS0 36 (0x60) WDTCR – – – WDCE WDE WDP2 WDP1 WDP0 50 0x3F (0x5F) SREG I T H S V N Z C 13 0x3E (0x5E) SPH Stack Pointer High 15 0x3D (0x5D) SPL Stack Pointer Low 15 0x3C (0x5C) Reserved – – – – – – – – 0x3B (0x5B) Reserved – – – – – – – – 0x3A (0x5A) Reserved – – – – – – – – 0x39 (0x59) Reserved – – – – – – – – 0x38 (0x58) Reserved – – – – – – – – 0x37 (0x57) SPMCSR SPMIE RWWSB – RWWSRE BLBSET PGWRT PGERS SPMEN 262 0x36 (0x56) Reserved – – – – – – – – 0x35 (0x55) MCUCR JTD BODS BODSE PUD – – IVSEL IVCE 58/85/247 0x34 (0x54) MCUSR – – – JTRF WDRF BORF EXTRF PORF 50 0x33 (0x53) SMCR – – – – SM2 SM1 SM0 SE 50 0x32 (0x52) Reserved – – – – – – – – 0x31 (0x51) OCDR IDRD/OCDR7 OCDR6 OCDR5 OCDR4 OCDR3 OCDR2 OCDR1 OCDR0 221 0x30 (0x50) ACSR ACD ACBG ACO ACI ACIE ACIC ACIS1 ACIS0 196 0x2F (0x4F) Reserved – – – – – – – – 0x2E (0x4E) SPDR SPI Data Register 155 0x2D (0x4D) SPSR SPIF WCOL – – – – – SPI2X 155 0x2C (0x4C) SPCR SPIE SPE DORD MSTR CPOL CPHA SPR1 SPR0 154 0x2B (0x4B) GPIOR2 General Purpose I/O Register 27 0x2A (0x4A) GPIOR1 General Purpose I/O Register 27 0x29 (0x49) Reserved – – – – – – – – 0x28 (0x48) Reserved – – – – – – – – 0x27 (0x47) OCR0A Timer/Counter0 Output Compare A 101 0x26 (0x46) TCNT0 Timer/Counter0 100 0x25 (0x45) Reserved – – – – – – – – 0x24 (0x44) TCCR0A FOC0A WGM00 COM0A1 COM0A0 WGM01 CS02 CS01 CS00 98 0x23 (0x43) GTCCR TSM – – – – – PSR2 PSR10 130/146 ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 13 Atmel-8285FS–AVR-ATmega–08/2014

Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page 0x22 (0x42) EEARH – – – – – EEPROM Address Register High 25 0x21 (0x41) EEARL EEPROM Address Register Low 25 0x20 (0x40) EEDR EEPROM Data Register 26 0x1F (0x3F) EECR – – – – EERIE EEMWE EEWE EERE 26 0x1E (0x3E) GPIOR0 General Purpose I/O Register 27 0x1D (0x3D) EIMSK PCIE PCIE2 PCIE1 PCIE0 – – – INT0 61 0x1C (0x3C) EIFR PCIF3 PCIF2 PCIF1 PCIF0 – – – INTF0 62 0x1B (0x3B) Reserved – – – – – – – – 0x1A (0x3A) Reserved – – – – – – – – 0x19 (0x39) Reserved – – – – – – – – 0x18 (0x38) Reserved – – – – – – – – 0x17 (0x37) TIFR2 – – – – – – OCF2A TOV2 145 0x16 (0x36) TIFR1 – – ICF1 – – OCF1B OCF1A TOV1 127 0x15 (0x35) TIFR0 – – – – – – OCF0A TOV0 130 0x14 (0x34) PORTG – – – PORTG4 PORTG3 PORTG2 PORTG1 PORTG0 87 0x13 (0x33) DDRG – – – DDG4 DDG3 DDG2 DDG1 DDG0 87 0x12 (0x32) PING – – PING5 PING4 PING3 PING2 PING1 PING0 87 0x11 (0x31) PORTF PORTF7 PORTF6 PORTF5 PORTF4 PORTF3 PORTF2 PORTF1 PORTF0 87 0x10 (0x30) DDRF DDF7 DDF6 DDF5 DDF4 DDF3 DDF2 DDF1 DDF0 87 0x0F (0x2F) PINF PINF7 PINF6 PINF5 PINF4 PINF3 PINF2 PINF1 PINF0 87 0x0E (0x2E) PORTE PORTE7 PORTE6 PORTE5 PORTE4 PORTE3 PORTE2 PORTE1 PORTE0 86 0x0D (0x2D) DDRE DDE7 DDE6 DDE5 DDE4 DDE3 DDE2 DDE1 DDE0 86 0x0C (0x2C) PINE PINE7 PINE6 PINE5 PINE4 PINE3 PINE2 PINE1 PINE0 87 0x0B (0x2B) PORTD PORTD7 PORTD6 PORTD5 PORTD4 PORTD3 PORTD2 PORTD1 PORTD0 86 0x0A (0x2A) DDRD DDD7 DDD6 DDD5 DDD4 DDD3 DDD2 DDD1 DDD0 86 0x09 (0x29) PIND PIND7 PIND6 PIND5 PIND4 PIND3 PIND2 PIND1 PIND0 86 0x08 (0x28) PORTC PORTC7 PORTC6 PORTC5 PORTC4 PORTC3 PORTC2 PORTC1 PORTC0 86 0x07 (0x27) DDRC DDC7 DDC6 DDC5 DDC4 DDC3 DDC2 DDC1 DDC0 86 0x06 (0x26) PINC PINC7 PINC6 PINC5 PINC4 PINC3 PINC2 PINC1 PINC0 86 0x05 (0x25) PORTB PORTB7 PORTB6 PORTB5 PORTB4 PORTB3 PORTB2 PORTB1 PORTB0 85 0x04 (0x24) DDRB DDB7 DDB6 DDB5 DDB4 DDB3 DDB2 DDB1 DDB0 85 0x03 (0x23) PINB PINB7 PINB6 PINB5 PINB4 PINB3 PINB2 PINB1 PINB0 85 0x02 (0x22) PORTA PORTA7 PORTA6 PORTA5 PORTA4 PORTA3 PORTA2 PORTA1 PORTA0 85 0x01 (0x21) DDRA DDA7 DDA6 DDA5 DDA4 DDA3 DDA2 DDA1 DDA0 85 0x00 (0x20) PINA PINA7 PINA6 PINA5 PINA4 PINA3 PINA2 PINA1 PINA0 85 Note: 1. For compatibility with future devices, reserved bits should be written to zero if accessed. Reserved I/O memory addresses should never be written. 2. I/O Registers within the address range 0x00 - 0x1F are directly bit-accessible using the SBI and CBI instructions. In these registers, the value of single bits can be checked by using the SBIS and SBIC instructions. 3. Some of the Status Flags are cleared by writing a logical one to them. Note that, unlike most other AVRs, the CBI and SBI instructions will only operate on the specified bit, and can therefore be used on registers containing such Status Flags. The CBI and SBI instructions work with registers 0x00 to 0x1F only. 4. When using the I/O specific commands IN and OUT, the I/O addresses 0x00 - 0x3F must be used. When addressing I/O Registers as data space using LD and ST instructions, 0x20 must be added to these addresses. The ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P is a complex microcontroller with more peripheral units than can be supported within the 64 location reserved in Opcode for the IN and OUT instructions. For the Extended I/O space from 0x60 - 0xFF in SRAM, only the ST/STS/STD and LD/LDS/LDD instructions can be used. ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 14 Atmel-8285FS–AVR-ATmega–08/2014

8. Instruction Set Summary Mnemonics Operands Description Operation Flags #Clocks ARITHMETIC AND LOGIC INSTRUCTIONS ADD Rd, Rr Add two Registers Rd ← Rd + Rr Z,C,N,V,H 1 ADC Rd, Rr Add with Carry two Registers Rd ← Rd + Rr + C Z,C,N,V,H 1 ADIW Rdl,K Add Immediate to Word Rdh:Rdl ← Rdh:Rdl + K Z,C,N,V,S 2 SUB Rd, Rr Subtract two Registers Rd ← Rd - Rr Z,C,N,V,H 1 SUBI Rd, K Subtract Constant from Register Rd ← Rd - K Z,C,N,V,H 1 SBC Rd, Rr Subtract with Carry two Registers Rd ← Rd - Rr - C Z,C,N,V,H 1 SBCI Rd, K Subtract with Carry Constant from Reg. Rd ← Rd - K - C Z,C,N,V,H 1 SBIW Rdl,K Subtract Immediate from Word Rdh:Rdl ← Rdh:Rdl - K Z,C,N,V,S 2 AND Rd, Rr Logical AND Registers Rd ← Rd • Rr Z,N,V 1 ANDI Rd, K Logical AND Register and Constant Rd ← Rd • K Z,N,V 1 OR Rd, Rr Logical OR Registers Rd ← Rd v Rr Z,N,V 1 ORI Rd, K Logical OR Register and Constant Rd ← Rd v K Z,N,V 1 EOR Rd, Rr Exclusive OR Registers Rd ← Rd ⊕ Rr Z,N,V 1 COM Rd One’s Complement Rd ← 0xFF − Rd Z,C,N,V 1 NEG Rd Two’s Complement Rd ← 0x00 − Rd Z,C,N,V,H 1 SBR Rd,K Set Bit(s) in Register Rd ← Rd v K Z,N,V 1 CBR Rd,K Clear Bit(s) in Register Rd ← Rd • (0xFF - K) Z,N,V 1 INC Rd Increment Rd ← Rd + 1 Z,N,V 1 DEC Rd Decrement Rd ← Rd − 1 Z,N,V 1 TST Rd Test for Zero or Minus Rd ← Rd • Rd Z,N,V 1 CLR Rd Clear Register Rd ← Rd ⊕ Rd Z,N,V 1 SER Rd Set Register Rd ← 0xFF None 1 MUL Rd, Rr Multiply Unsigned R1:R0 ← Rd x Rr Z,C 2 MULS Rd, Rr Multiply Signed R1:R0 ← Rd x Rr Z,C 2 MULSU Rd, Rr Multiply Signed with Unsigned R1:R0 ← Rd x Rr Z,C 2 FMUL Rd, Rr Fractional Multiply Unsigned R1:R0 ← (Rd x Rr) << 1 Z,C 2 FMULS Rd, Rr Fractional Multiply Signed R1:R0 ¬ (Rd x Rr) << 1 Z,C 2 FMULSU Rd, Rr Fractional Multiply Signed with Unsigned R1:R0 ¬ (Rd x Rr) << 1 Z,C 2 BRANCH INSTRUCTIONS RJMP k Relative Jump PC ← PC + k + 1 None 2 IJMP Indirect Jump to (Z) PC ← Z None 2 JMP k Direct Jump PC ← k None 3 RCALL k Relative Subroutine Call PC ← PC + k + 1 None 3 ICALL Indirect Call to (Z) PC ← Z None 3 CALL k Direct Subroutine Call PC ← k None 4 RET Subroutine Return PC ← STACK None 4 RETI Interrupt Return PC ← STACK I 4 CPSE Rd,Rr Compare, Skip if Equal if (Rd = Rr) PC ← PC + 2 or 3 None 1/2/3 CP Rd,Rr Compare Rd − Rr Z, N,V,C,H 1 CPC Rd,Rr Compare with Carry Rd − Rr − C Z, N,V,C,H 1 CPI Rd,K Compare Register with Immediate Rd − K Z, N,V,C,H 1 SBRC Rr, b Skip if Bit in Register Cleared if (Rr(b)=0) PC ← PC + 2 or 3 None 1/2/3 SBRS Rr, b Skip if Bit in Register is Set if (Rr(b)=1) PC ← PC + 2 or 3 None 1/2/3 SBIC P, b Skip if Bit in I/O Register Cleared if (P(b)=0) PC ← PC + 2 or 3 None 1/2/3 SBIS P, b Skip if Bit in I/O Register is Set if (P(b)=1) PC ← PC + 2 or 3 None 1/2/3 BRBS s, k Branch if Status Flag Set if (SREG(s) = 1) then PC←PC+k + 1 None 1/2 BRBC s, k Branch if Status Flag Cleared if (SREG(s) = 0) then PC←PC+k + 1 None 1/2 BREQ k Branch if Equal if (Z = 1) then PC ← PC + k + 1 None 1/2 BRNE k Branch if Not Equal if (Z = 0) then PC ← PC + k + 1 None 1/2 BRCS k Branch if Carry Set if (C = 1) then PC ← PC + k + 1 None 1/2 BRCC k Branch if Carry Cleared if (C = 0) then PC ← PC + k + 1 None 1/2 BRSH k Branch if Same or Higher if (C = 0) then PC ← PC + k + 1 None 1/2 BRLO k Branch if Lower if (C = 1) then PC ← PC + k + 1 None 1/2 BRMI k Branch if Minus if (N = 1) then PC ← PC + k + 1 None 1/2 BRPL k Branch if Plus if (N = 0) then PC ← PC + k + 1 None 1/2 BRGE k Branch if Greater or Equal, Signed if (N ⊕ V= 0) then PC ← PC + k + 1 None 1/2 BRLT k Branch if Less Than Zero, Signed if (N ⊕ V= 1) then PC ← PC + k + 1 None 1/2 BRHS k Branch if Half Carry Flag Set if (H = 1) then PC ← PC + k + 1 None 1/2 BRHC k Branch if Half Carry Flag Cleared if (H = 0) then PC ← PC + k + 1 None 1/2 BRTS k Branch if T Flag Set if (T = 1) then PC ← PC + k + 1 None 1/2 BRTC k Branch if T Flag Cleared if (T = 0) then PC ← PC + k + 1 None 1/2 BRVS k Branch if Overflow Flag is Set if (V = 1) then PC ← PC + k + 1 None 1/2 ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 15 Atmel-8285FS–AVR-ATmega–08/2014

Mnemonics Operands Description Operation Flags #Clocks BRVC k Branch if Overflow Flag is Cleared if (V = 0) then PC ← PC + k + 1 None 1/2 BRIE k Branch if Interrupt Enabled if ( I = 1) then PC ← PC + k + 1 None 1/2 BRID k Branch if Interrupt Disabled if ( I = 0) then PC ← PC + k + 1 None 1/2 BIT AND BIT-TEST INSTRUCTIONS SBI P,b Set Bit in I/O Register I/O(P,b) ← 1 None 2 CBI P,b Clear Bit in I/O Register I/O(P,b) ← 0 None 2 LSL Rd Logical Shift Left Rd(n+1) ← Rd(n), Rd(0) ← 0 Z,C,N,V 1 LSR Rd Logical Shift Right Rd(n) ← Rd(n+1), Rd(7) ← 0 Z,C,N,V 1 ROL Rd Rotate Left Through Carry Rd(0)←C,Rd(n+1)← Rd(n),C←Rd(7) Z,C,N,V 1 ROR Rd Rotate Right Through Carry Rd(7)←C,Rd(n)← Rd(n+1),C←Rd(0) Z,C,N,V 1 ASR Rd Arithmetic Shift Right Rd(n) ← Rd(n+1), n=0..6 Z,C,N,V 1 SWAP Rd Swap Nibbles Rd(3..0)←Rd(7..4),Rd(7..4)←Rd(3..0) None 1 BSET s Flag Set SREG(s) ← 1 SREG(s) 1 BCLR s Flag Clear SREG(s) ← 0 SREG(s) 1 BST Rr, b Bit Store from Register to T T ← Rr(b) T 1 BLD Rd, b Bit load from T to Register Rd(b) ← T None 1 SEC Set Carry C ← 1 C 1 CLC Clear Carry C ← 0 C 1 SEN Set Negative Flag N ← 1 N 1 CLN Clear Negative Flag N ← 0 N 1 SEZ Set Zero Flag Z ← 1 Z 1 CLZ Clear Zero Flag Z ← 0 Z 1 SEI Global Interrupt Enable I ← 1 I 1 CLI Global Interrupt Disable I ← 0 I 1 SES Set Signed Test Flag S ← 1 S 1 CLS Clear Signed Test Flag S ← 0 S 1 SEV Set Twos Complement Overflow. V ← 1 V 1 CLV Clear Twos Complement Overflow V ← 0 V 1 SET Set T in SREG T ← 1 T 1 CLT Clear T in SREG T ← 0 T 1 SEH Set Half Carry Flag in SREG H ← 1 H 1 CLH Clear Half Carry Flag in SREG H ← 0 H 1 DATA TRANSFER INSTRUCTIONS MOV Rd, Rr Move Between Registers Rd ← Rr None 1 MOVW Rd, Rr Copy Register Word Rd+1:Rd ← Rr+1:Rr None 1 LDI Rd, K Load Immediate Rd ← K None 1 LD Rd, X Load Indirect Rd ← (X) None 2 LD Rd, X+ Load Indirect and Post-Inc. Rd ← (X), X ← X + 1 None 2 LD Rd, - X Load Indirect and Pre-Dec. X ← X - 1, Rd ← (X) None 2 LD Rd, Y Load Indirect Rd ← (Y) None 2 LD Rd, Y+ Load Indirect and Post-Inc. Rd ← (Y), Y ← Y + 1 None 2 LD Rd, - Y Load Indirect and Pre-Dec. Y ← Y - 1, Rd ← (Y) None 2 LDD Rd,Y+q Load Indirect with Displacement Rd ← (Y + q) None 2 LD Rd, Z Load Indirect Rd ← (Z) None 2 LD Rd, Z+ Load Indirect and Post-Inc. Rd ← (Z), Z ← Z+1 None 2 LD Rd, -Z Load Indirect and Pre-Dec. Z ← Z - 1, Rd ← (Z) None 2 LDD Rd, Z+q Load Indirect with Displacement Rd ← (Z + q) None 2 LDS Rd, k Load Direct from SRAM Rd ← (k) None 2 ST X, Rr Store Indirect (X) ← Rr None 2 ST X+, Rr Store Indirect and Post-Inc. (X) ← Rr, X ← X + 1 None 2 ST - X, Rr Store Indirect and Pre-Dec. X ← X - 1, (X) ← Rr None 2 ST Y, Rr Store Indirect (Y) ← Rr None 2 ST Y+, Rr Store Indirect and Post-Inc. (Y) ← Rr, Y ← Y + 1 None 2 ST - Y, Rr Store Indirect and Pre-Dec. Y ← Y - 1, (Y) ← Rr None 2 STD Y+q,Rr Store Indirect with Displacement (Y + q) ← Rr None 2 ST Z, Rr Store Indirect (Z) ← Rr None 2 ST Z+, Rr Store Indirect and Post-Inc. (Z) ← Rr, Z ← Z + 1 None 2 ST -Z, Rr Store Indirect and Pre-Dec. Z ← Z - 1, (Z) ← Rr None 2 STD Z+q,Rr Store Indirect with Displacement (Z + q) ← Rr None 2 STS k, Rr Store Direct to SRAM (k) ← Rr None 2 LPM Load Program Memory R0 ← (Z) None 3 LPM Rd, Z Load Program Memory Rd ← (Z) None 3 LPM Rd, Z+ Load Program Memory and Post-Inc Rd ← (Z), Z ← Z+1 None 3 SPM Store Program Memory (Z) ← R1:R0 None - IN Rd, P In Port Rd ← P None 1 OUT P, Rr Out Port P ← Rr None 1 PUSH Rr Push Register on Stack STACK ← Rr None 2 POP Rd Pop Register from Stack Rd ← STACK None 2 ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 16 Atmel-8285FS–AVR-ATmega–08/2014

Mnemonics Operands Description Operation Flags #Clocks MCU CONTROL INSTRUCTIONS NOP No Operation None 1 SLEEP Sleep (see specific descr. for Sleep function) None 1 WDR Watchdog Reset (see specific descr. for WDR/timer) None 1 BREAK Break For On-chip Debug Only None N/A ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 17 Atmel-8285FS–AVR-ATmega–08/2014

9. Ordering Information 9.1 ATmega165A Speed (MHz)(3) Power Supply Ordering Code(2) Package(1) Operation Range ATmega165A-AU 64A ATmega165A-AUR(4) 64A ATmega165A-MU 64M1 Industrial ATmega165A-MUR(4) 64M1 (-40°C to 85°C) ATmega165A-MCH 64MC 16 1.8 - 5.5V ATmega165A-MCHR(4) 64MC ATmega165A-AN 64A ATmega165A-ANR(4) 64A Extended ATmega165A-MN 64M1 (-40°C to 105°C)(5) ATmega165A-MNR(4) 64M1 Notes: 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. V , see Figure 28-1 on page 302. CC 4. Tape & Reel 5. See characterization specifications at 105°C. Package Type 64A 64-Lead, Thin (1.0mm) Plastic Gull Wing Quad Flat Package (TQFP) 64M1 64-pad, 9 x 9 x 1.0mm body, lead pitch 0.50mm, Quad Flat No-Lead/Micro Lead Frame Package (QFN/MLF) 64MC 64-lead (2-row Staggered), 7 x 7 x 1.0 mm body, 4.0 x 4.0mm Exposed Pad, Quad Flat No-Lead Package (QFN) ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 18 Atmel-8285FS–AVR-ATmega–08/2014

9.2 ATmega165PA Speed (MHz)(3) Power Supply Ordering Code(2) Package(1) Operation Range ATmega165PA-AU 64A ATmega165PA-AUR(4) 64A ATmega165PA-MU 64M1 Industrial ATmega165PA-MUR(4) 64M1 (-40°C to 85°C) ATmega165PA-MCH 64MC 16 1.8 - 5.5V ATmega165PA-MCHR(4) 64MC ATmega165PA-AN 64A ATmega165PA-ANR(4) 64A Extended ATmega165PA-MN 64M1 (-40°C to 105°C)(5) ATmega165PA-MNR(4) 64M1 Notes: 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. V , see Figure 28-1 on page 302. CC 4. Tape & Reel. 5. See characterization specifications at 105°C. Package Type 64A 64-Lead, Thin (1.0mm) Plastic Gull Wing Quad Flat Package (TQFP) 64M1 64-pad, 9 x 9 x 1.0mm body, lead pitch 0.50mm, Quad Flat No-Lead/Micro Lead Frame Package (QFN/MLF) 64MC 64-lead (2-row Staggered), 7 x 7 x 1.0mm body, 4.0 x 4.0 mm Exposed Pad, Quad Flat No-Lead Package (QFN) ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 19 Atmel-8285FS–AVR-ATmega–08/2014

9.3 ATmega325A Speed (MHz)(3) Power Supply Ordering Code(2) Package(1) Operation Range ATmega325A-AU 64A ATmega325A-AUR(4) 64A Industrial ATmega325A-MU 64M1 (-40°C to 85°C) ATmega325A-MUR(4) 64M1 20 1.8 - 5.5V ATmega325A-AN 64A ATmega325A-ANR(4) 64A Extended ATmega325A-MN 64M1 (-40°C to 105°C)(5) ATmega325A-MNR(4) 64M1 Notes: 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. V , see Figure 28-1 on page 302. CC 4. Tape & Reel 5. See characterizations specifications at 105°C. Package Type 64A 64-Lead, Thin (1.0mm) Plastic Gull Wing Quad Flat Package (TQFP) 64M1 64-pad, 9 x 9 x 1.0mm body, lead pitch 0.50mm, Quad Flat No-Lead/Micro Lead Frame Package (QFN/MLF) ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 20 Atmel-8285FS–AVR-ATmega–08/2014

9.4 ATmega325PA Speed (MHz)(3) Power Supply Ordering Code(2) Package(1) Operation Range ATmega325PA-AU 64A ATmega325PA-AUR(4) 64A Industrial ATmega325PA-MU 64M1 (-40°C to 85°C) ATmega325PA-MUR(4) 64M1 20 1.8 - 5.5V ATmega325PA-AN 64A ATmega325PA-ANR(4) 64A Extended ATmega325PA-MN 64M1 (-40°C to 105°C)(5) ATmega325PA-MNR(4) 64M1 Notes: 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. V , see Figure 28-1 on page 302. CC 4. Tape & Reel 5. See characterization specifications at 105°C. Package Type 64A 64-Lead, Thin (1.0mm) Plastic Gull Wing Quad Flat Package (TQFP) 64M1 64-pad, 9 x 9 x 1.0mm body, lead pitch 0.50mm, Quad Flat No-Lead/Micro Lead Frame Package (QFN/MLF) ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 21 Atmel-8285FS–AVR-ATmega–08/2014

9.5 ATmega3250A Speed (MHz)(3) Power Supply Ordering Code(2) Package(1) Operation Range ATmega3250A-AU 100A Industrial ATmega3250A-AUR(4) 100A (-40°C to 85°C) 20 1.8 - 5.5V ATmega3250A-AN 100A Extended ATmega3250A-ANR(4) 100A (-40°C to 105°C)(5) Notes: 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. V , see Figure 28-1 on page 302. CC 4. Tape & Reel 5. See characterization specifications at 105°C. Package Type 100A 100-lead, 14 x 14 x 1.0mm, 0.5mm Lead Pitch, Thin Profile Plastic Quad Flat Package (TQFP) ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 22 Atmel-8285FS–AVR-ATmega–08/2014

9.6 ATmega3250PA Speed (MHz)(3) Power Supply Ordering Code(2) Package(1) Operation Range ATmega3250PA-AU 100A Industrial ATmega3250PA-AUR(4) 100A (-40°C to 85°C) 20 1.8 - 5.5V ATmega3250PA-AN 100A Extended ATmega3250PA-ANR(4) 100A (-40°C to 105°C)(5) Notes: 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. V , see Figure 28-1 on page 302. CC 4. Tape & Reel 5. See characterization specifications at 105°C. Package Type 100A 100-lead, 14 x 14 x 1.0mm, 0.5mm Lead Pitch, Thin Profile Plastic Quad Flat Package (TQFP) ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 23 Atmel-8285FS–AVR-ATmega–08/2014

9.7 ATmega645A Speed (MHz)(3) Power Supply Ordering Code(2) Package(1) Operation Range ATmega645A-AU 64A ATmega645A-AUR(4) 64A Industrial 20 1.8 - 5.5V ATmega645A-MU 64M1 (-40°C to 85°C) ATmega645A-MUR(4) 64M1 Notes: 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. V , see Figure 28-1 on page 302. CC 4. Tape & Reel Package Type 64A 64-Lead, Thin (1.0mm) Plastic Gull Wing Quad Flat Package (TQFP) 64M1 64-pad, 9 x 9 x 1.0mm body, lead pitch 0.50mm, Quad Flat No-Lead/Micro Lead Frame Package (QFN/MLF) ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 24 Atmel-8285FS–AVR-ATmega–08/2014

9.8 ATmega645P Speed (MHz)(3) Power Supply Ordering Code(2) Package(1) Operation Range ATmega645P-AU 64A ATmega645P-AUR(4) 64A Industrial 20 1.8 - 5.5V ATmega645P-MU 64M1 (-40°C to 85°C) ATmega645P-MUR(4) 64M1 Notes: 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. V , see Figure 28-1 on page 302. CC 4. Tape & Reel Package Type 64A 64-Lead, Thin (1.0mm) Plastic Gull Wing Quad Flat Package (TQFP) 64M1 64-pad, 9 x 9 x 1.0mm body, lead pitch 0.50mm, Quad Flat No-Lead/Micro Lead Frame Package (QFN/MLF) ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 25 Atmel-8285FS–AVR-ATmega–08/2014

9.9 ATmega6450A Speed (MHz)(3) Power Supply Ordering Code(2) Package(1) Operation Range ATmega6450A-AU 100A Industrial 20 1.8 - 5.5V ATmega6450A-AUR(4) 100A (-40°C to 85°C) Notes: 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. V , see Figure 28-1 on page 302. CC 4. Tape & Reel Package Type 100A 100-lead, 14 x 14 x 1.0mm, 0.5mm Lead Pitch, Thin Profile Plastic Quad Flat Package (TQFP) ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 26 Atmel-8285FS–AVR-ATmega–08/2014

9.10 ATmega6450P Speed (MHz)(3) Power Supply Ordering Code(2) Package(1) Operation Range ATmega6450P-AU 100A Industrial 20 1.8 - 5.5V ATmega6450P-AUR(4) 100A (-40°C to 85°C) Notes: 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. V , see Figure 28-1 on page 302. CC 4. Tape & Reel Package Type 100A 100-lead, 14 x 14 x 1.0mm, 0.5mm Lead Pitch, Thin Profile Plastic Quad Flat Package (TQFP) ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 27 Atmel-8285FS–AVR-ATmega–08/2014

10. Packaging Information 10.1 64A PIN 1 B PIN 1 B e PIN 1 IDENTIFIER e PIN 1 IDENTIFIER E1 E E1 E D1 D1 D D C C 0°~0°7~°7° AA11 AA22 AA LL COCMOMMOMNO DNIM DEIMNSEINOSNISONS (Un(Uitn oitf mofe maseuarseu =r em =m m)m) SYSMYMBOBOLL MIMNIN NONMOM MAXMAX NOTNEOTE A – – 1.20 A – – 1.20 A1 0.05 – 0.15 A1 0.05 – 0.15 A2 0.95 1.00 1.05 A2 0.95 1.00 1.05 D 15.75 16.00 16.25 D 15.75 16.00 16.25 D1 13.90 14.00 14.10 Note 2 D1 13.90 14.00 14.10 Note 2 E 15.75 16.00 16.25 Notes: E 15.75 16.00 16.25 Note s : 1.This package conforms to JEDEC reference MS-026, Variation AEB. E1 13.90 14.00 14.10 Note 2 E1 13.90 14.00 14.10 Note 2 1. Thi2s. pDaicmkeangseio cnosn Dfo1r amnsd t Eo1 J dEoD EnCo tr ienfcelruednec em MolSd- p0r2o6t,r uVsairoiant. i on AAEllBo.w able B 0.30 – 0.45 2. D impernostirounsiso Dn 1is a0n.2d5 Em1m d ope nro stid ine.c Dluimdee nmsioolnds p Dr1o tarnudsi Eo1n .a re mAalxloimwuambl e B 0.30 – 0.45 C 0.09 – 0.20 p rotprulassitoicn b iso d0y.2 s5izme mdi mpeern ssiidone.s Dinimcluednisnigo nmso Dld1 manisdm Ea1tc ahr.e maximum C 0.09 – 0.20 p3la. sLteiacd b coodpyl asnizaer idtyim is e0n.1s0iomnms imncalxuidminugm m. old mismatch. L 0.45 – 0.75 3. Lead coplanarity is 0.10mm maximum. L 0.45 – 0.75 e 0.80 TYP e 0.80 TYP 2010-10-20 TITLE DRAWING NO. 201R0E-V1.0 -20 2325 Orchard Parkway TITL6E4A, 64-lead, 14 x 14mm Body Size, 1.0mm Body Thickness, DRAWING NO. REV. 23 2 S5a nO Jrcohsea,r CdA P a 9r5k1w3a1y 0.8mm Lead Pitch, Thin Profile Plastic Quad Flat Package (TQFP) 64A C 64A, 64-lead, 14 x 14mm Body Size, 1.0mm Body Thickness, San Jose, CA 95131 64A C 0.8mm Lead Pitch, Thin Profile Plastic Quad Flat Package (TQFP) ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 28 Atmel-8285FS–AVR-ATmega–08/2014

10.2 64M1 D D Marked Pin# 1 ID Marked Pin# 1 ID E E C SEATING PLANE C SEATING PLANE A1 TOP VIEW A1 TOP VIEW A A KK 0.00.808CC L L DD22 PPiinn ##11 CCoorrnneerr SSIDIDEE V VIEIEWW 11 OOppttiioonn AA PPinin ##11 TTrriaianngglele 22 33 COCMOMMOMNO ND IMDIEMNESNIOSNIOSNS (U(nUitn oitf oMf eMaesausreu r=e m =m m)m) E2E2 SSYYMMBBOOLL MMININ NONMOM MAMXAX NONTEOTE OOppttiioonn BB PPinin ##11 AA 0.08.08 0 0.900.9 0 1.010.00 Chamfer (CCh 0a.m30fe)r A1 – 0.02 0.05 (C 0.30) A1 – 0.02 0.05 b 0.18 0.25 0.30 b 0.18 0.25 0.30 D 8.90 9.00 9.10 D 8.90 9.00 9.10 D2 5.20 5.40 5.60 K K bb ee OOppttiioonn CC PN(PN(00ion.ion.2t2 tc #0c#0h1 hR1 R )) EEDE2 2 85..5892 ..0029 00 95..045900..4000 95..165900..6100 BOTTOM VIEW E2 5.20 5.40 5.60 e 0.50 BSC BOTTOM VIEW e 0.50 BSC L 0.35 0.40 0.45 L 0.35 0.40 0.45 K 1.25 1.40 1.55 Notes: K 1.25 1.40 1.55 No t1e.s J:EDEC Standard MO-220, (SAW Singulation) Fig. 1, VMMD. 1. J 2E. DDEimCe Snstaionnd aanrdd MtoOle-r2an2c0e, (cSoAnWfor mSi ntog uAlSaMtioEnY) 1F4ig.5. M1,- 1V9M94M.D. 2. Dimension and tolerance conform to ASMEY14.5M-1994. 2010-10-19 2010-10-19 TITLE DRAWING NO. REV. 2325 Orchard Parkway TIT64LME1, 64-pad, 9 x 9 x 1.0 mm Body, Lead Pitch 0.50 mm, DRAWING NO. REV. 23 2S5a nO Jrcohsea,r dC AP a 9rk5w13a1y 5.40 mm Exposed Pad, Micro Lead Frame Package (MLF) 64M1 H 64M1, 64-pad, 9 x 9 x 1.0 mm Body, Lead Pitch 0.50 mm, San Jose, CA 95131 5.40 mm Exposed Pad, Micro Lead Frame Package (MLF) 64M1 H ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 29 Atmel-8285FS–AVR-ATmega–08/2014

10.3 64MC C Pin 1 ID D SIDE VIEW y A1 E A TOP VIEW eT/2 eT L A26 A34 R B23 B30 e COMMON DIMENSIONS (Unit of Measure = mm) A25 A1 B22 B1 SYMBOL MIN NOM MAX NOTE R0.20 0.40 b A 0.80 0.90 1.00 A1 0.00 0.02 0.05 D2 b 0.18 0.23 0.28 C 0.20 REF eT D 6.90 7.00 7.10 D2 3.95 4.00 4.05 B16 B7 A18 A8 E 6.90 7.00 7.10 B15 B8 (0.18) REF E2 3.95 4.00 4.05 eT – 0.65 – A17 A9 L E2 K (0.1) REF eR – 0.65 – K 0.20 – – (REF) BOTTOM VIEW L 0.35 0.40 0.45 Note: 1. The terminal #1 ID is a Laser-marked Feature. y 0.00 – 0.075 10/3/07 TITLE GPC DRAWING NO. REV. Package Drawing Contact: 64MC, 64QFN (2-Row Staggered), packagedrawings@atmel.com 7 x 7 x 1.00 mm Body, 4.0 x 4.0 mm Exposed Pad, ZXC 64MC A Quad Flat No Lead Package ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 30 Atmel-8285FS–AVR-ATmega–08/2014

10.4 100A PIN 1 B PIN 1 IDENTIFIER e E1 E D1 D C 0°~7° A1 A2 A L COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL MIN NOM MAX NOTE A – – 1.20 A1 0.05 – 0.15 A2 0.95 1.00 1.05 D 15.75 16.00 16.25 D1 13.90 14.00 14.10 Note 2 E 15.75 16.00 16.25 Notes: 1. This package conforms to JEDEC reference MS-026, Variation AED. E1 13.90 14.00 14.10 Note 2 2. Dimensions D1 and E1 do not include mold protrusion. Allowable B 0.17 – 0.27 protrusion is 0.25mm per side. Dimensions D1 and E1 are maximum C 0.09 – 0.20 plastic body size dimensions including mold mismatch. 3. Lead coplanarity is 0.08mm maximum. L 0.45 – 0.75 e 0.50 TYP 2014-02-05 100A, 100-lead, 14 x 14mm Body Size, 1.0mm Body Thickness, 0.5mm Lead Pitch, Thin Profile Plastic Quad Flat Package (TQFP) 100A E ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 31 Atmel-8285FS–AVR-ATmega–08/2014

11. Errata 11.1 ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P Rev. G No known errata. 11.2 ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P Rev. A to F Not sampled. ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 32 Atmel-8285FS–AVR-ATmega–08/2014

12. Datasheet Revision History Please note that the referring page numbers in this section are referring to this document. The referring revisions in this section are referring to the document revision. 12.1 8285F – 08/2014 1. New back page from datasheet template 2014-0502 2. Changed chip definition in the text in Section 9.6 ”Low-frequency XTAL Oscillator” on page 32. 12.2 8285E – 02/2013 1. Applied partially the Atmel new template. New log, front page, page layout and last page changed. 2. Added ”Electrical Characteristics – TA = -40°C to 105°C” on page 308. 3. Removed sections 28.5 and 28.6, page 326. 4. Added ”Typical Characteristics – TA = -40°C to 105°C” on page 630. 5. Changed Input hysteresis (mV) to Input hysteresis (V) throughout the “Typical characteristics – TA = -40°C to 85°C” . 6. Updated the typical characteristics to include Port H for all 100-pin devices: ATmega3250A/PA/6450/P. Port H has the same performance as Port A, C, D, E, F, G. 7. Updated ”Packaging Information” on page 28 to take into account the added the 105°C devices. 12.3 8285D – 06/11 1. Removed “Preliminary” from the front page. 12.4 8285C – 06/11 1. Updated ”Signature bytes” on page 267. A, P and PA devices have different signature (0x002) bytes. 2. Updated ”DC characteristics” on page 295 for all devices. ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 33 Atmel-8285FS–AVR-ATmega–08/2014

12.5 8285B – 03/11 1. Updated the datasheet according to the Atmel new Brand Style Guide 2. Updated “Signature bytes” , Table 27.3 on page 267. 3. Updated the power supply voltage (1.5 - 5.5V) for all devices in ”Ordering Information” on page 18. 4. Added “Ordering Information” for Extended Temperature (-40°C to 105°C) 12.6 8285A – 09/10 1. Initial revision (Based on the ATmega165P/325P/3250P/645/6450/V). 2. Changes done compared to ATmega165P/325P/3250P/645/6450/V datasheet: ̶ New EIMSK and EIFR register overview ̶ New graphics in ”Typical characteristics – TA = -40°C to 85°C” on page 314. ̶ Ordering Information includes Tape & Reel ̶ New ”Ordering Information” on page 18. ̶ QTouch Library Support Features ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 34 Atmel-8285FS–AVR-ATmega–08/2014

ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET SUMMARY ] 35 Atmel-8285FS–AVR-ATmega–08/2014

X X X X X X Atmel Corporation 1600 Technology Drive, San Jose, CA 95110 USA T: (+1)(408) 441.0311 F: (+1)(408) 436.4200 | www.atmel.com © 2014 Atmel Corporation. / Rev.: Atmel-8285FS-AVR-ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P-Datasheet Summary_08/2014. Atmel®, Atmel logo and combinations thereof, Enabling Unlimited Possibilities, and others are registered trademarks or trademarks of Atmel Corporation in U.S. and other countries. Other terms and product names may be trademarks of others. DISCLAIMER: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN THE ATMEL TERMS AND CONDITIONS OF SALES LOCATED ON THE ATMEL WEBSITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS AND PROFITS, BUSINESS INTERRUPTION, OR LOSS OF INFORMATION) ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and products descriptions at any time without notice. Atmel does not make any commitment to update the information contained herein. Unless specifically provided otherwise, Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. SAFETY-CRITICAL, MILITARY, AND AUTOMOTIVE APPLICATIONS DISCLAIMER: Atmel products are not designed for and will not be used in connection with any applications where the failure of such products would reasonably be expected to result in significant personal injury or death (“Safety-Critical Applications”) without an Atmel officer's specific written consent. Safety-Critical Applications include, without limitation, life support devices and systems, equipment or systems for the operation of nuclear facilities and weapons systems. Atmel products are not designed nor intended for use in military or aerospace applications or environments unless specifically designated by Atmel as military-grade. Atmel products are not designed nor intended for use in automotive applications unless specifically designated by Atmel as automotive-grade.