24AA08/24LC08B 2 8K I C™ Serial EEPROM Device Selection Table Description The Microchip Technology Inc. 24AA08/24LC08B Part VCC Max Clock Temp (24XX08*) is a 8 Kbit Electrically Erasable PROM. The Number Range Frequency Ranges device is organized as four blocks of 256 x 8-bit 24AA08 1.8-5.5 400kHz(1) I memory with a 2-wire serial interface. Low voltage 24LC08B 2.5-5.5 400kHz I, E design permits operation down to 1.8V, with standby and active currents of only 1µA and 1mA, Note 1: 100kHz for VCC <2.5V respectively. The 24XX08 also has a page write capability for up to 16 bytes of data. The 24XX08 is Features available in the standard 8-pin PDIP, surface mount SOIC, TSSOP and MSOP packages and is also • Single supply with operation down to 1.8V available in the 5-lead SOT-23 package. (cid:127) Low-power CMOS technology - 1mA active current typical Package Types - 1µA standby current typical (I-temp) PDIP/SOIC/TSSOP/MSOP SOT-23-5 (cid:127) Organized as 4 blocks of 256 bytes (4 x 256 x 8) (cid:127) 2-wire serial interface bus, I 2C™ compatible A0 1 8 Vcc (cid:127) Schmitt Trigger inputs for noise suppression SCL 1 5 WP 2 2 A1 2 4 7 WP 4 (cid:127) Output slope control to eliminate ground bounce X Vss 2 X (cid:127) 100kHz (<2.5V) and 400kHz ( ≥2.5V) compatibility A2 3 X0 6 SCL X0 (cid:127) Self-timed write cycle (including auto-erase) Vss 4 8 5 SDA SDA 3 8 4 Vcc (cid:127) Page write buffer for up to 16 bytes (cid:127) 2ms typical write cycle time for page write Note: Pins A0, A1 and A2 are not used by the (cid:127) Hardware write-protect for entire memory 24XX08. (No internal connections). (cid:127) Can be operated as a serial ROM (cid:127) Factory programming (QTP) available Block Diagram (cid:127) ESD protection > 4,000V (cid:127) 1,000,000 erase/write cycles HV WP Generator (cid:127) Data retention > 200 years (cid:127) 8-lead PDIP, SOIC, TSSOP and MSOP packages (cid:127) 5-lead SOT-23 package I/O Memory EEPROM (cid:127) Standard and Pb-free finishes available Control Control XDEC Array Logic Logic (cid:127) Available for extended temperature ranges: Page - Industrial (I): -40°C to +85°C Latches - Automotive (E): -40°C to +125°C I/O SCL YDEC SDA VCC VSS Sense Amp. R/W Control *24XX08 is used in this document as a generic part number for the 24AA08/24LC08B devices.  2003 Microchip Technology Inc. DS21710C-page 1

24AA08/24LC08B 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings (†) VCC.............................................................................................................................................................................6.5V All inputs and outputs w.r.t. VSS.........................................................................................................-0.3V to VCC +1.0V Storage temperature...............................................................................................................................-65°C to +150°C Ambient temperature with power applied................................................................................................-65°C to +125°C ESD protection on all pins......................................................................................................................................................≥ 4kV † NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. TABLE 1-1: DC CHARACTERISTICS VCC = +1.8V to +5.5V DC CHARACTERISTICS Industrial (I): TA = -40°C to +85°C Automotive (E): TA = -40°C to +125°C Param. Symbol Characteristic Min Typ Max Units Conditions No. D1 VIH WP, SCL and SDA pins — — — — — D2 — High-level input voltage 0.7 VCC — — V — D3 VIL Low-level input voltage — — 0.3 VCC V — D4 VHYS Hysteresis of Schmitt 0.05 VCC — — V (Note) Trigger inputs D5 VOL Low-level output voltage — — 0.40 V IOL = 3.0mA, VCC = 2.5V D6 ILI Input leakage current — — ±1 µA VIN =.1V to VCC D7 ILO Output leakage current — — ±1 µA VOUT =.1V to VCC D8 CIN, Pin capacitance — — 10 pF VCC = 5.0V (Note) COUT (all inputs/outputs) TA = 25°C, FCLK = 1MHz D9 ICC write Operating current — 0.1 3 mA VCC = 5.5V, SCL = 400kHz D10 ICC read — 0.05 1 mA — D11 ICCS Standby current — 0.01 1 µA Industrial — — 5 µA Automotive SDA = SCL = VCC WP = VSS Note: This parameter is periodically sampled and not 100% tested. DS21710C-page 2  2003 Microchip Technology Inc.

24AA08/24LC08B TABLE 1-2: AC CHARACTERISTICS VCC = +1.8V to +5.5V AC CHARACTERISTICS Industrial (I): TA = -40°C to +85°C Automotive (E): TA = -40°C to +125°C Param. Symbol Characteristic Min Typ Max Units Conditions No. 1 FCLK Clock frequency — — 400 kHz 2.5V ≤ VCC ≤ 5.5V — — 100 1.8V ≤ VCC < 2.5V (24AA08) 2 THIGH Clock high time 600 — — ns 2.5V ≤ VCC ≤ 5.5V 4000 — — 1.8V ≤ VCC < 2.5V (24AA08) 3 TLOW Clock low time 1300 — — ns 2.5V ≤ VCC ≤ 5.5V 4700 — — 1.8V ≤ VCC < 2.5V (24AA08) 4 TR SDA and SCL rise time — — 300 ns 2.5V ≤ VCC ≤ 5.5V (Note1) (Note1) — — 1000 1.8V ≤ VCC < 2.5V (24AA08) (Note1) 5 TF SDA and SCL fall time — — 300 ns (Note1) — 6 THD:STA Start condition hold time 600 — — ns 2.5V ≤ VCC ≤ 5.5V 4000 — — 1.8V ≤ VCC < 2.5V (24AA08) 7 TSU:STA Start condition setup 600 — — ns 2.5V ≤ VCC ≤ 5.5V time 4700 — — 1.8V ≤ VCC < 2.5V (24AA08) 8 THD:DAT Data input hold time 0 — — ns (Note2) — 9 TSU:DAT Data input setup time 100 — — ns 2.5V ≤ VCC ≤ 5.5V 250 — — 1.8V ≤ VCC < 2.5V (24AA08) 10 TSU:STO Stop condition setup 600 — — ns 2.5V ≤ VCC ≤ 5.5V time 4000 — — 1.8V ≤ VCC < 2.5V (24AA08) 11 TAA Output valid from clock — — 900 ns 2.5V ≤ VCC ≤ 5.5V (Note2) — — 3500 1.8V ≤ VCC < 2.5V (24AA08) 12 TBUF Bus free time: Time the 1300 — — ns 2.5V ≤ VCC ≤ 5.5V bus must be free before 4700 — — 1.8V ≤ VCC < 2.5V (24AA08) a new transmission can start 13 TOF Output fall time from VIH 20+0.1CB — 250 ns 2.5V ≤ VCC ≤ 5.5V minimum to VIL — — 250 1.8V ≤ VCC < 2.5V (24AA08) maximum 14 TSP Input filter spike — — 50 ns (Notes1 and3) suppression (SDA and SCL pins) 15 TWC Write cycle time (byte or — — 5 ms — page) 16 — Endurance 1M — — cycles 25°C, (Note4) Note 1: Not 100% tested. CB = total capacitance of one bus line in pF. 2: As a transmitter, the device must provide an internal minimum delay time to bridge the undefined region (minimum 300ns) of the falling edge of SCL to avoid unintended generation of Start or Stop conditions. 3: The combined TSP and VHYS specifications are due to new Schmitt Trigger inputs which provide improved noise spike suppression. This eliminates the need for a TI specification for standard operation. 4: This parameter is not tested but ensured by characterization. For endurance estimates in a specific application, please consult the Total Endurance™ Model which can be obtained from Microchip’s web site: www.microchip.com.  2003 Microchip Technology Inc. DS21710C-page 3

24AA08/24LC08B FIGURE 1-1: BUS TIMING DATA 5 4 2 3 SCL 7 8 9 10 6 SDA IN 14 11 12 SDA OUT FIGURE 1-2: BUS TIMING START/STOP D4 SCL 6 7 10 SDA START STOP DS21710C-page 4  2003 Microchip Technology Inc.

24AA08/24LC08B 2.0 FUNCTIONAL DESCRIPTION 3.4 Data Valid (D) The 24XX08 supports a bidirectional, 2-wire bus and The state of the data line represents valid data when, data transmission protocol. A device that sends data after a Start condition, the data line is stable for the onto the bus is defined as a transmitter, while a device duration of the high period of the clock signal. receiving data is defined as a receiver. The bus has to The data on the line must be changed during the low be controlled by a master device which generates the period of the clock signal. There is one clock pulse per serial clock (SCL), controls the bus access and bit of data. generates the Start and Stop conditions, while the Each data transfer is initiated with a Start condition and 24XX08 works as slave. Both master and slave can terminated with a Stop condition. The number of the operate as transmitter or receiver, but the master data bytes transferred between the Start and Stop device determines which mode is activated. conditions is determined by the master device and is theoretically unlimited, although only the last sixteen 3.0 BUS CHARACTERISTICS will be stored when doing a write operation. When an overwrite does occur it will replace data in a first-in first- The following bus protocol has been defined: out (FIFO) fashion. (cid:127) Data transfer may be initiated only when the bus is not busy. 3.5 Acknowledge (cid:127) During data transfer, the data line must remain stable whenever the clock line is high. Changes in Each receiving device, when addressed, is obliged to the data line while the clock line is high will be generate an acknowledge after the reception of each interpreted as a Start or Stop condition. byte. The master device must generate an extra clock pulse which is associated with this Acknowledge bit. Accordingly, the following bus conditions have been defined (Figure3-1). Note: The 24XX08 does not generate any Acknowledge bits if an internal program- 3.1 Bus not Busy (A) ming cycle is in progress. The device that acknowledges, has to pull down the Both data and clock lines remain high. SDA line during the acknowledge clock pulse in such a way that the SDA line is stable low during the high 3.2 Start Data Transfer (B) period of the acknowledge related clock pulse. Of A high-to-low transition of the SDA line while the clock course, setup and hold times must be taken into (SCL) is high determines a Start condition. All account. During reads, a master must signal an end of commands must be preceded by a Start condition. data to the slave by not generating an Acknowledge bit on the last byte that has been clocked out of the slave. In this case, the slave (24XX08) will leave the data line 3.3 Stop Data Transfer (C) high to enable the master to generate the Stop A low-to-high transition of the SDA line while the clock condition. (SCL) is high determines a Stop condition. All operations must be ended with a Stop condition. FIGURE 3-1: DATA TRANSFER SEQUENCE ON THE SERIAL BUS (A) (B) (D) (D) (C) (A) SCL SDA START ADDRESS OR DATA STOP CONDITION ACKNOWLEDGE ALLOWED CONDITION VALID TO CHANGE  2003 Microchip Technology Inc. DS21710C-page 5

24AA08/24LC08B 3.6 Device Addressing FIGURE 3-2: CONTROL BYTE ALLOCATION A control byte is the first byte received following the Start condition from the master device (Figure3-2). START READ/WRITE The control byte consists of a four-bit control code. For the 24XX08,this is set as ‘1010’ binary for read and SLAVE ADDRESS R/W A write operations. The next three bits of the control byte are the block-select bits (B2, B1, B0). B2 is a ‘don’t care’ for the 24XX08. They are used by the master device to select which of the four 256 word-blocks of memory are to be accessed. These bits are in effect the 1 0 1 0 X B1 B0 three Most Significant bits of the word address. The last bit of the control byte defines the operation to X = ‘Don’t care’ be performed. When set to ‘1’, a read operation is selected. When set to ‘0’ a write operation is selected. Following the Start condition, the 24XX08 monitors the SDA bus checking the device type identifier being transmitted and, upon receiving a ‘1010’ code, the slave device outputs an Acknowledge signal on the SDA line. Depending on the state of the R/W bit, the 24XX08 will select a read or write operation. Control Operation Block Select R/W Code Read 1010 Block Address 1 Write 1010 Block Address 0 DS21710C-page 6  2003 Microchip Technology Inc.

24AA08/24LC08B 4.0 WRITE OPERATION 4.2 Page Write The write control byte, word address and the first data 4.1 Byte Write byte are transmitted to the 24XX08 in the same way as in a byte write. However, instead of generating a Stop Following the Start condition from the master, the condition, the master transmits up to 16 data bytes to device code (4 bits), the block address (3 bits) and the the 24XX08, which are temporarily stored in the on- R/W bit, which is a logic-low, is placed onto the bus by chip page buffer and will be written into memory once the master transmitter. This indicates to the addressed the master has transmitted a Stop condition. Upon slave receiver that a byte with a word address will receipt of each word, the four lower-order address follow once it has generated an Acknowledge bit during pointer bits are internally incremented by ‘1’. The the ninth clock cycle. Therefore, the next byte transmit- higher-order 7 bits of the word address remain ted by the master is the word address and will be constant. If the master should transmit more than 16 written into the address pointer of the 24XX08. After words prior to generating the Stop condition, the receiving another Acknowledge signal from the address counter will roll over and the previously 24XX08, the master device will transmit the data word received data will be overwritten. As with the byte write to be written into the addressed memory location. The operation, once the Stop condition is received an 24XX08 acknowledges again and the master internal write cycle will begin (Figure4-2). generates a Stop condition. This initiates the internal write cycle and, during this time, the 24XX08 will not Note: Page write operations are limited to writing generate Acknowledge signals (Figure4-1). bytes within a single physical page, regardless of the number of bytes actually being written. Physical page boundaries start at addresses that are integer multiples of the page buffer size (or ‘page-size’) and end at addresses that are integer multiples of [page size - 1]. If a Page Write command attempts to write across a physical page boundary, the result is that the data wraps around to the beginning of the current page (overwriting data previously stored there), instead of being written to the next page, as might be expected. It is therefore necessary for the application software to prevent page write operations that would attempt to cross a page boundary. FIGURE 4-1: BYTE WRITE S S BUS ACTIVITY T CONTROL WORD T MASTER A BYTE ADDRESS DATA O R P T SDA LINE S P A A A BUS ACTIVITY C C C K K K FIGURE 4-2: PAGE WRITE S S BUS ACTIVITY T CONTROL WORD T MASTER AR BYTE ADDRESS (n) DATA (n) DATA (n + 1) DATA (n + 15) OP T SDA LINE S P A A A A A BUS ACTIVITY C C C C C K K K K K  2003 Microchip Technology Inc. DS21710C-page 7

24AA08/24LC08B 5.0 ACKNOWLEDGE POLLING 6.0 WRITE PROTECTION Since the device will not acknowledge during a write The 24XX08 can be used as a serial ROM when the cycle, this can be used to determine when the cycle is WP pin is connected to VCC. Programming will be complete (this feature can be used to maximize bus inhibited and the entire memory will be write-protected. throughput). Once the Stop condition for a Write command has been issued from the master, the device initiates the internally-timed write cycle and ACK polling can then be initiated immediately. This involves the master sending a Start condition followed by the control byte for a Write command (R/W = 0). If the device is still busy with the write cycle, no ACK will be returned. If the cycle is complete, the device will return the ACK and the master can then proceed with the next Read or Write command. See Figure5-1 for a flow diagram of this operation. FIGURE 5-1: ACKNOWLEDGE POLLING FLOW Send Write Command Send Stop Condition to Initiate Write Cycle Send Start Send Control Byte with R/W = 0 Did Device No Acknowledge (ACK = 0)? Yes Next Operation DS21710C-page 8  2003 Microchip Technology Inc.

24AA08/24LC08B 7.0 READ OPERATION 7.3 Sequential Read Read operations are initiated in the same way as write Sequential reads are initiated in the same way as a operations, with the exception that the R/W bit of the random read, except that once the 24XX08 transmits slave address is set to ‘1’. There are three basic types the first data byte, the master issues an acknowledge of read operations: current address read, random read as opposed to a Stop condition in a random read. This and sequential read. directs the 24XX08 to transmit the next sequentially- addressed 8-bit word (Figure7-3). 7.1 Current Address Read To provide sequential reads, the 24XX08 contains an internal address pointer that is incremented by one The 24XX08 contains an address counter that main- upon completion of each operation. This address tains the address of the last word accessed, internally pointer allows the entire memory contents to be serially incremented by ‘1’. Therefore, if the previous access read during one operation. (either a read or write operation) was to address n, the next current address read operation would access data 7.4 Noise Protection from address n + 1. Upon receipt of the slave address with R/W bit set to ‘1’, the 24XX08 issues an acknowl- The 24XX08 employs a VCC threshold detector circuit edge and transmits the 8-bit data word. The master will which disables the internal erase/write logic if the VCC not acknowledge the transfer but does generate a Stop is below 1.5V at nominal conditions. condition and the 24XX08 discontinues transmission The SCL and SDA inputs have Schmitt Trigger and (Figure7-1). filter circuits which suppress noise spikes to assure proper device operation, even on a noisy bus. 7.2 Random Read Random read operations allow the master to access any memory location in a random manner. To perform this type of read operation, the word address must first be set. This is accomplished by sending the word address to the 24XX08 as part of a write operation. Once the word address is sent, the master generates a Start condition following the acknowledge. This terminates the write operation, but not before the internal address pointer is set. The master then issues the control byte again, but with the R/W bit set to a ‘1’. The 24XX08 will then issue an acknowledge and trans- mit the 8-bit data word. The master will not acknowl- edge the transfer but does generate a Stop condition and the 24XX08 will discontinue transmission (Figure7-2). FIGURE 7-1: CURRENT ADDRESS READ S BUS ACTIVITY T CONTROL S MASTER A BYTE DATA (n) T R O T P SDA LINE S P A N BUS ACTIVITY C O K A C K  2003 Microchip Technology Inc. DS21710C-page 9

24AA08/24LC08B FIGURE 7-2: RANDOM READ S S BUS ACTIVITYT CONTROL WORD T CONTROL S A A T MASTER R BYTE ADDRESS (n) R BYTE DATA (n) O T T P S S P SDA LINE A A A N C C C O K K K BUS ACTIVITY A C K FIGURE 7-3: SEQUENTIAL READ S BUS ACTIVITYCONTROL T MASTER BYTE DATA (n) DATA (n + 1) DATA (n + 2) DATA (n + X) O P SDA LINE P A A A A N BUS ACTIVITY C C C C O K K K K A C K DS21710C-page 10  2003 Microchip Technology Inc.

24AA08/24LC08B 8.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table8-1. TABLE 8-1: PIN FUNCTION TABLE Name PDIP SOIC TSSOP MSOP SOT-23 Description A0 1 1 1 1 — Not Connected A1 2 2 2 2 — Not Connected A2 3 3 3 3 — Not Connected VSS 4 4 4 4 2 Ground SDA 5 5 5 5 3 Serial Address/Data I/O SCL 6 6 6 6 1 Serial Clock WP 7 7 7 7 5 Write-Protect Input VCC 8 8 8 8 4 +1.8V to 5.5V Power Supply 8.1 Serial Address/Data Input/Output 8.3 Write-Protect (WP) (SDA) The WP pin must be connected to either VSS or VCC. SDA is a bidirectional pin used to transfer addresses If tied to VSS, normal memory operation is enabled and data into and out of the device. Since it is an open- (read/write the entire memory 00-03FFH). drain terminal, the SDA bus requires a pull-up resistor to VCC (typical 10kΩ for 100kHz, 2kΩ for 400kHz). If tied to VCC, write operations are inhibited. The entire memory will be write-protected. Read operations are For normal data transfer, SDA is allowed to change not affected. only during SCL low. Changes during SCL high are This feature allows the user to use the 24XX08 as a reserved for indicating Start and Stop conditions. serial ROM when WP is enabled (tied to VCC). 8.2 Serial Clock (SCL) 8.4 A0, A1, A2 The SCL input is used to synchronize the data transfer The A0, A1 and A2 pins are not used by the 24XX08. to and from the device. They may be left floating or tied to either VSS or VCC.  2003 Microchip Technology Inc. DS21710C-page 11

24AA08/24LC08B 9.0 PACKAGING INFORMATION 9.1 Package Marking Information 8-Lead PDIP (300 mil) Example: XXXXXXXX 24LC08B T/XXXNNN I/P13F YYWW 0327 8-Lead SOIC (150 mil) Example: XXXXXXXX 24LC08B T/XXYYWW I/SN0327 NNN 13F 8-Lead TSSOP Example: TSSOP/MSOP XXXX 4L08 Device Marking Codes TYWW I327 STD Pb-free NNN 13F 24AA08 4A08 G4A8 24LC08B 4L08 G4L8 8-Lead MSOP Example: XXXXXT 4L08BI YWWNNN Y32713F SOT-23 5-Lead SOT-23 Example: Device Marking Codes STD Pb-free 24AA08 B4 B4 24LC08B-I M4 M4 XXNN M43F 24LC08B-E N4 N4 Note: Pb-free part number using “G” suffix is marked on carton Legend: XX...X Customer specific information* T Temperature grade (I, E) YY Year code (last 2 digits of calendar year) WW Week code (week of January 1 is week ‘01’) NNN Alphanumeric traceability code Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line thus limiting the number of available characters for customer specific information. *Standard OTP marking consists of Microchip part number, year code, week code, and traceability code. DS21710C-page 12  2003 Microchip Technology Inc.

24AA08/24LC08B 8-Lead Plastic Dual In-line (P) – 300 mil (PDIP) E1 D 2 n 1 α E A A2 L c A1 β B1 p eB B Units INCHES* MILLIMETERS Dimension Limits MIN NOM MAX MIN NOM MAX Number of Pins n 8 8 Pitch p .100 2.54 Top to Seating Plane A .140 .155 .170 3.56 3.94 4.32 Molded Package Thickness A2 .115 .130 .145 2.92 3.30 3.68 Base to Seating Plane A1 .015 0.38 Shoulder to Shoulder Width E .300 .313 .325 7.62 7.94 8.26 Molded Package Width E1 .240 .250 .260 6.10 6.35 6.60 Overall Length D .360 .373 .385 9.14 9.46 9.78 Tip to Seating Plane L .125 .130 .135 3.18 3.30 3.43 Lead Thickness c .008 .012 .015 0.20 0.29 0.38 Upper Lead Width B1 .045 .058 .070 1.14 1.46 1.78 Lower Lead Width B .014 .018 .022 0.36 0.46 0.56 Overall Row Spacing § eB .310 .370 .430 7.87 9.40 10.92 Mold Draft Angle Top α 5 10 15 5 10 15 Mold Draft Angle Bottom β 5 10 15 5 10 15 * Controlling Parameter § Significant Characteristic Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010” (0.254mm) per side. JEDEC Equivalent: MS-001 Drawing No. C04-018  2003 Microchip Technology Inc. DS21710C-page 13

24AA08/24LC08B 8-Lead Plastic Small Outline (SN) –Narrow, 150 mil (SOIC) E E1 p D 2 B n 1 h α 45° c A A2 φ β L A1 Units INCHES* MILLIMETERS Dimension Limits MIN NOM MAX MIN NOM MAX Number of Pins n 8 8 Pitch p .050 1.27 Overall Height A .053 .061 .069 1.35 1.55 1.75 Molded Package Thickness A2 .052 .056 .061 1.32 1.42 1.55 Standoff § A1 .004 .007 .010 0.10 0.18 0.25 Overall Width E .228 .237 .244 5.79 6.02 6.20 Molded Package Width E1 .146 .154 .157 3.71 3.91 3.99 Overall Length D .189 .193 .197 4.80 4.90 5.00 Chamfer Distance h .010 .015 .020 0.25 0.38 0.51 Foot Length L .019 .025 .030 0.48 0.62 0.76 Foot Angle φ 0 4 8 0 4 8 Lead Thickness c .008 .009 .010 0.20 0.23 0.25 Lead Width B .013 .017 .020 0.33 0.42 0.51 Mold Draft Angle Top α 0 12 15 0 12 15 Mold Draft Angle Bottom β 0 12 15 0 12 15 * Controlling Parameter § Significant Characteristic Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010” (0.254mm) per side. JEDEC Equivalent: MS-012 Drawing No. C04-057 DS21710C-page 14  2003 Microchip Technology Inc.

24AA08/24LC08B 8-Lead Plastic Thin Shrink Small Outline (ST) – 4.4 mm (TSSOP) E E1 p D 2 1 n B α A c φ A1 A2 β L Units INCHES MILLIMETERS* Dimension Limits MIN NOM MAX MIN NOM MAX Number of Pins n 8 8 Pitch p .026 0.65 Overall Height A .043 1.10 Molded Package Thickness A2 .033 .035 .037 0.85 0.90 0.95 Standoff § A1 .002 .004 .006 0.05 0.10 0.15 Overall Width E .246 .251 .256 6.25 6.38 6.50 Molded Package Width E1 .169 .173 .177 4.30 4.40 4.50 Molded Package Length D .114 .118 .122 2.90 3.00 3.10 Foot Length L .020 .024 .028 0.50 0.60 0.70 Foot Angle φ 0 4 8 0 4 8 Lead Thickness c .004 .006 .008 0.09 0.15 0.20 Lead Width B .007 .010 .012 0.19 0.25 0.30 Mold Draft Angle Top α 0 5 10 0 5 10 Mold Draft Angle Bottom β 0 5 10 0 5 10 * Controlling Parameter § Significant Characteristic Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .005” (0.127mm) per side. JEDEC Equivalent: MO-153 Drawing No. C04-086  2003 Microchip Technology Inc. DS21710C-page 15

24AA08/24LC08B 8-Lead Plastic Micro Small Outline Package (MS) (MSOP) E E1 p D 2 B n 1 α A A2 c φ A1 (F) L β Units INCHES MILLIMETERS* Dimension Limits MIN NOM MAX MIN NOM MAX Number of Pins n 8 8 Pitch p .026 BSC 0.65 BSC Overall Height A - - .043 - - 1.10 Molded Package Thickness A2 .030 .033 .037 0.75 0.85 0.95 Standoff A1 .000 - .006 0.00 - 0.15 Overall Width E .193 TYP. 4.90 BSC Molded Package Width E1 .118 BSC 3.00 BSC Overall Length D .118 BSC 3.00 BSC Foot Length L .016 .024 .031 0.40 0.60 0.80 Footprint (Reference) F .037 REF 0.95 REF Foot Angle φ 0° - 8° 0° - 8° Lead Thickness c .003 .006 .009 0.08 - 0.23 Lead Width B .009 .012 .016 0.22 - 0.40 Mold Draft Angle Top α 5° - 15° 5° - 15° Mold Draft Angle Bottom β 5° - 15° 5° - 15° *Controlling Parameter Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010" (0.254mm) per side. JEDEC Equivalent: MO-187 Drawing No. C04-111 DS21710C-page 16  2003 Microchip Technology Inc.

24AA08/24LC08B 5-Lead Plastic Small Outline Transistor (OT) (SOT-23) E E1 p B p1 D n 1 α c A A2 φ A1 β L Units INCHES* MILLIMETERS Dimension Limits MIN NOM MAX MIN NOM MAX Number of Pins n 5 5 Pitch p .038 0.95 Outside lead pitch (basic) p1 .075 1.90 Overall Height A .035 .046 .057 0.90 1.18 1.45 Molded Package Thickness A2 .035 .043 .051 0.90 1.10 1.30 Standoff § A1 .000 .003 .006 0.00 0.08 0.15 Overall Width E .102 .110 .118 2.60 2.80 3.00 Molded Package Width E1 .059 .064 .069 1.50 1.63 1.75 Overall Length D .110 .116 .122 2.80 2.95 3.10 Foot Length L .014 .018 .022 0.35 0.45 0.55 Foot Angle φ 0 5 10 0 5 10 Lead Thickness c .004 .006 .008 0.09 0.15 0.20 Lead Width B .014 .017 .020 0.35 0.43 0.50 Mold Draft Angle Top α 0 5 10 0 5 10 Mold Draft Angle Bottom β 0 5 10 0 5 10 * Controlling Parameter § Significant Characteristic Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010” (0.254mm) per side. JEDEC Equivalent: MO-178 Drawing No. C04-091  2003 Microchip Technology Inc. DS21710C-page 17

24AA08/24LC08B APPENDIX A: REVISION HISTORY Revision C Corrections to Section 1.0, Electrical Characteristics. Section 9.1, 24LC08B standard marking code. DS21710C-page 18  2003 Microchip Technology Inc.

24AA08/24LC08B ON-LINE SUPPORT SYSTEMS INFORMATION AND UPGRADE HOT LINE Microchip provides on-line support on the Microchip World Wide Web site. The Systems Information and Upgrade Line provides The web site is used by Microchip as a means to make system users a listing of the latest versions of all of files and information easily available to customers. To Microchip's development systems software products. view the site, the user must have access to the Internet Plus, this line provides information on how customers and a web browser, such as Netscape® or Microsoft® can receive the most current upgrade kits. The Hot Line Internet Explorer. Files are also available for FTP Numbers are: download from our FTP site. 1-800-755-2345 for U.S. and most of Canada, and 1-480-792-7302 for the rest of the world. Connecting to the Microchip Internet Web Site 042003 The Microchip web site is available at the following URL: www.microchip.com The file transfer site is available by using an FTP service to connect to: ftp://ftp.microchip.com The web site and file transfer site provide a variety of services. Users may download files for the latest Development Tools, Data Sheets, Application Notes, User's Guides, Articles and Sample Programs. A vari- ety of Microchip specific business information is also available, including listings of Microchip sales offices, distributors and factory representatives. Other data available for consideration is: (cid:127) Latest Microchip Press Releases (cid:127) Technical Support Section with Frequently Asked Questions (cid:127) Design Tips (cid:127) Device Errata (cid:127) Job Postings (cid:127) Microchip Consultant Program Member Listing (cid:127) Links to other useful web sites related to Microchip Products (cid:127) Conferences for products, Development Systems, technical information and more (cid:127) Listing of seminars and events  2003 Microchip Technology Inc. DS21710C-page 19

24AA08/24LC08B READER RESPONSE It is our intention to provide you with the best documentation possible to ensure successful use of your Microchip prod- uct. If you wish to provide your comments on organization, clarity, subject matter, and ways in which our documentation can better serve you, please FAX your comments to the Technical Publications Manager at (480) 792-4150. Please list the following information, and use this outline to provide us with your comments about this document. To: Technical Publications Manager Total Pages Sent ________ RE: Reader Response From: Name Company Address City / State / ZIP / Country Telephone: (_______) _________ - _________ FAX: (______) _________ - _________ Application (optional): Would you like a reply? Y N Device: 24AA08/24LC08B Literature Number: DS21710C Questions: 1. What are the best features of this document? 2. How does this document meet your hardware and software development needs? 3. Do you find the organization of this document easy to follow? If not, why? 4. What additions to the document do you think would enhance the structure and subject? 5. What deletions from the document could be made without affecting the overall usefulness? 6. Is there any incorrect or misleading information (what and where)? 7. How would you improve this document? DS21710C-page 20  2003 Microchip Technology Inc.

24AA08/24LC08B PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART NO. X /XX X Examples: Device Temperature Package Lead Finish a) 24AA08-I/P: Industrial Temperature,1.8V, Range PDIP package b) 24AA08-I/SN: Industrial Temperature,1.8V, SOIC package 24AA08: = 1.8V, 16 Kbit I2C Serial EEPROM 24AA08T: = 1.8V, 16 Kbit I2C Serial EEPROM c) 24AA08T-I/OT: Industrial Temperature, 1.8V, SOT-23 package, Tape and Reel (Tape and Reel) 24LC08B: = 2.5V, 16 Kbit I2C Serial EEPROM 24LC08BT: = 2.5V, 16 Kbit I2C Serial EEPROM d) 24LC08B-I/P: Industrial Temperature, 2.5V, (Tape and Reel) PDIP package e) 24LC08B-E/SN: Automotive Temp.,2.5V Temperature I =-40°C to +85°C SOIC package Range: E =-40°C to +125°C f) 24LC08BT-I/OT: Industrial Temperature, 2.5V, SOT-23 package, Tape and Reel Package: P = Plastic DIP (300 mil body), 8-lead g) 24LC08B-I/PG: Industrial Temperature, SN = Plastic SOIC (150 mil body), 8-lead 2.5V, PDIP package, Pb-free ST = Plastic TSSOP (4.4 mm), 8-lead h) 24LC08BT-I/SNG: Industrial Temperature, MS = Plastic Micro Small Outline (MSOP), 8-lead 2.5V, SOIC package, Tape and Reel, OT = SOT-23, 5-lead (Tape and Reel only) Pb-free Lead Finish Blank = Standard 63% / 37% SnPb G = Matte Tin (Pure Sn) Sales and Support Data Sheets Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recommended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following: 1. Your local Microchip sales office 2. The Microchip Corporate Literature Center U.S. FAX: (480) 792-7277 3. The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products.  2003 Microchip Technology Inc. DS21710C-page 21

24AA08/24LC08B NOTES: DS21710C-page 22  2003 Microchip Technology Inc.

Note the following details of the code protection feature on Microchip devices: (cid:127) Microchip products meet the specification contained in their particular Microchip Data Sheet. (cid:127) Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. (cid:127) There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip's Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. (cid:127) Microchip is willing to work with the customer who is concerned about the integrity of their code. (cid:127) Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.” Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device Trademarks applications and the like is intended through suggestion only The Microchip name and logo, the Microchip logo, Accuron, and may be superseded by updates. It is your responsibility to dsPIC, KEELOQ, MPLAB, PIC, PICmicro, PICSTART, ensure that your application meets with your specifications. PRO MATE and PowerSmart are registered trademarks of No representation or warranty is given and no liability is Microchip Technology Incorporated in the U.S.A. and other assumed by Microchip Technology Incorporated with respect countries. to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such AmpLab, FilterLab, microID, MXDEV, MXLAB, PICMASTER, use or otherwise. Use of Microchip’s products as critical com- SEEVAL and The Embedded Control Solutions Company are ponents in life support systems is not authorized except with registered trademarks of Microchip Technology Incorporated express written approval by Microchip. No licenses are con- in the U.S.A. veyed, implicitly or otherwise, under any intellectual property Application Maestro, dsPICDEM, dsPICDEM.net, ECAN, rights. ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, microPort, Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM, PICkit, PICDEM, PICDEM.net, PowerCal, PowerInfo, PowerMate, PowerTool, rfLAB, rfPIC, Select Mode, SmartSensor, SmartShunt, SmartTel and Total Endurance are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. Serialized Quick Turn Programming (SQTP) is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2003, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received QS-9000 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona in July 1999 and Mountain View, California in March 2002. The Company’s quality system processes and procedures are QS-9000 compliant for its PICmicro® 8-bit MCUs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, non-volatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001 certified.  2003 Microchip Technology Inc. DS21710C-page 23

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Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: M icrochip: 24LC08B-I/MS 24LC08B-I/SN 24LC08B-I/ST 24LC08B-E/P 24LC08B/ST 24AA08T/SN 24LC08B-E/ST 24LC08B- E/MS 24LC08B-E/SN 24AA08-I/ST 24AA08T-I/MS 24AA08T-I/OT 24AA08T-I/SN 24AA08-I/MS 24AA08T-I/ST 24AA08-I/SN 24LC08B/P 24LC08B-I/P 24LC08BT-E/MS 24LC08BT-E/ST 24LC08BT-E/OT 24LC08BT-E/SN 24AA08-I/P 24AA08/P 24LC08B/SN 24LC08BT/ST 24LC08BT/SN 24AA08/ST 24LC08BT-I/MS 24LC08BT-I/OT 24LC08BT-I/SN 24LC08BT-I/ST 24AA08/SN