M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x 16-Kbit, 8-Kbit, 4-Kbit, 2-Kbit and 1-Kbit (8-bit or 16-bit wide) MICROWIRE™ serial access EEPROM Datasheet - production data Features • Industry standard MICROWIRE™ bus • Single supply voltage: (cid:24) – 2.5 V to 5.5 V for M93Cx6-W (cid:17) – 1.8 V to 5.5 V for M93Cx6-R • Dual organization: by word (x16) or byte (x8) PDIP8 (BN) • Programming instructions that work on: byte, word or entire memory • Self-timed programming cycle with auto-erase: 5 ms • READY/BUSY signal during programming • 2 MHz clock rate SO8 (MN) • Sequential read operation • Enhanced ESD/latch-up behavior • More than 4 million write cycles • More than 200-year data retention • Packages TSSOP8 (DW) – SO8, TSSOP8, UFDFPN8 packages: 169 mil width ECOPACK2®) – PDIP8 package: ECOPACK1® Table 1. Device summary UFDFPN8 (MC) Part Memory Supply Reference 2 x 3 mm number size voltage M93C46-W 2.5 V to 5.5 V M93C46-x 1 Kbit M93C46-R 1.8 V to 5.5 V M93C56-W 2.5 V to 5.5 V M93C56-x 2 Kbit M93C56-R 1.8 V to 5.5 V M93C66-W 2.5 V to 5.5 V M93C66-x 4 Kbit M93C66-R 1.8 V to 5.5 V M93C76-W 2.5 V to 5.5 V M93C76-x 8 Kbit M93C76-R 1.8 V to 5.5 V M93C86-W 2.5 V to 5.5 V M93C86-x 16 Kbit M93C86-R 1.8 V to 5.5 V December 2015 DocID4997 Rev 17 1/35 This is information on a product in full production. www.st.com

Contents M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 Connecting to the serial bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3 Operating features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.1 Supply voltage (V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 CC 3.1.1 Operating supply voltage (V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 CC 3.1.2 Power-up conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.1.3 Power-up and device reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.1.4 Power-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4 Memory organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5 Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5.1 Read Data from Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5.2 Erase and Write data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5.2.1 Write Enable and Write Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5.2.2 Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5.2.3 Write All . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 5.2.4 Erase Byte or Word . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5.2.5 Erase All . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 6 READY/BUSY status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 7 Initial delivery state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 8 Clock pulse counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 9 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 10 DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 11 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 11.1 PDIP8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 11.2 SO8N package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 2/35 DocID4997 Rev 17

M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Contents 11.3 UFDFN8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 11.4 TSSOP8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 12 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 13 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 DocID4997 Rev 17 3/35 3

List of tables M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x List of tables Table 1. Device summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table 2. Memory size versus organization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 3. Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 4. Instruction set for the M93C46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Table 5. Instruction set for the M93C56 and M93C66 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Table 6. Instruction set for the M93C76 and M93C86 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Table 7. Absolute maximum ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Table 8. Operating conditions (M93Cx6-W). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Table 9. Operating conditions (M93Cx6-R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Table 10. Cycling performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Table 11. Memory cell data retention. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Table 12. AC measurement conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Table 13. Input and output capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Table 14. DC characteristics (M93Cx6-W, device grade 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Table 16. AC characteristics (M93Cx6-W, M93Cx6-R, device grade 6). . . . . . . . . . . . . . . . . . . . . . . 22 Table 15. DC characteristics (M93Cx6-R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Table 17. AC characteristics (M93Cx6-R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Table 18. PDIP8 – 8 lead plastic dual in-line package, 300 mils body width, package mechanical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Table 19. SO8N – 8-lead plastic small outline, 150 mils body width, package mechanical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Table 20. UFDFN8 - 8-lead, 2 × 3 mm, 0.5 mm pitch ultra thin profile fine pitch dual flat package mechanical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Table 21. TSSOP8 – 8-lead thin shrink small outline, 3 x 4.4 mm, 0.5 mm pitch, package mechanical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Table 22. Ordering information scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Table 23. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 4/35 DocID4997 Rev 17

M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x List of figures List of figures Figure 1. Logic diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 2. 8-pin package connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 3. Bus master and memory devices on the serial bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 4. M93Cx6 ORG input connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 5. READ, WRITE, WEN, WDS sequences. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Figure 6. WRAL sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Figure 7. ERASE, ERAL sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Figure 8. Write sequence with one clock glitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Figure 9. AC testing input output waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Figure 10. Synchronous timing (Start and op-code input). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Figure 11. Synchronous timing (Read) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Figure 12. Synchronous timing (Write) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Figure 13. PDIP8 – 8 lead plastic dual in-line package, 300 mils body width, package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Figure 14. SO8N – 8-lead plastic small outline, 150 mils body width, package outline. . . . . . . . . . . . 26 Figure 15. SO8N – 8-lead plastic small outline, 150 mils body width, package recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Figure 16. UFDFN8 - 8-lead, 2 × 3 mm, 0.5 mm pitch ultra thin profile fine pitch dual flat package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Figure 17. TSSOP8 – 8-lead thin shrink small outline, 3 x 4.4 mm, 0.5 mm pitch, package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 DocID4997 Rev 17 5/35 5

Description M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x 1 Description The M93C46 (1 Kbit), M93C56 (2 Kbit), M93C66 (4 Kbit), M93C76 (8 Kbit) and M93C86 (16 Kbit) are Electrically Erasable PROgrammable Memory (EEPROM) devices accessed through the MICROWIRE™ bus protocol. The memory array can be configured either in bytes (x8b) or in words (x16b). The M93Cx6-W devices operate within a voltage supply range from 2.5 V to 5.5 V and the M93Cx6-R devices operate within a voltage supply range from 1.8 V to 5.5 V. All these devices operate with a clock frequency of 2 MHz (or less), over an ambient temperature range of - 40 °C / + 85 °C. Table 2. Memory size versus organization Device Number of bits Number of 8-bit bytes Number of 16-bit words M93C86 16384 2048 1024 M93C76 8192 1024 512 M93C66 4096 512 256 M93C56 2048 256 128 M93C46 1024 128 64 Figure 1. Logic diagram (cid:54)(cid:35)(cid:35) (cid:36) (cid:49) (cid:35) (cid:45)(cid:25)(cid:19)(cid:35)(cid:88)(cid:22) (cid:51) (cid:47)(cid:50)(cid:39) (cid:54)(cid:51)(cid:51) (cid:33)(cid:41)(cid:16)(cid:17)(cid:25)(cid:18)(cid:24) Table 3. Signal names Signal name Function Direction S Chip Select Input D Serial Data input Input Q Serial Data output Output C Serial Clock Input ORG Organization Select Input V Supply voltage - CC V Ground - SS 6/35 DocID4997 Rev 17

M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Description Figure 2. 8-pin package connections (top view) (cid:45)(cid:25)(cid:19)(cid:35)(cid:88)(cid:22) (cid:51) (cid:17) (cid:24) (cid:54)(cid:35)(cid:35) (cid:35) (cid:18) (cid:23) (cid:36)(cid:53) (cid:36) (cid:19) (cid:22) (cid:47)(cid:50)(cid:39) (cid:49) (cid:20) (cid:21) (cid:54)(cid:51)(cid:51) (cid:33)(cid:41)(cid:16)(cid:17)(cid:25)(cid:18)(cid:25)(cid:34) 1. See Section 11: Package information for package dimensions, and how to identify pin-1. 2. DU = Don't Use. The DU (do not use) pin does not contribute to the normal operation of the device. It is reserved for use by STMicroelectronics during test sequences. The pin may be left unconnected or may be connected to V or V . CC SS DocID4997 Rev 17 7/35 34

Connecting to the serial bus M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x 2 Connecting to the serial bus Figure 3 shows an example of three memory devices connected to an MCU, on a serial bus. Only one device is selected at a time, so only one device drives the Serial Data output (Q) line at a time, the other devices are high impedance. The pull-down resistor R (represented in Figure 3) ensures that no device is selected if the bus master leaves the S line in the high impedance state. In applications where the bus master may be in a state where all inputs/outputs are high impedance at the same time (for example, if the bus master is reset during the transmission of an instruction), the clock line (C) must be connected to an external pull-down resistor so that, if all inputs/outputs become high impedance, the C line is pulled low (while the S line is pulled low): this ensures that C does not become high at the same time as S goes low, and so, that the t requirement is met. The typical value of R is 100 kΩ. SLCH Figure 3. Bus master and memory devices on the serial bus (cid:0) (cid:54) (cid:51)(cid:51) (cid:54) (cid:35)(cid:35) (cid:50) (cid:51)(cid:36)(cid:47) (cid:51)(cid:36)(cid:41) (cid:51)(cid:35)(cid:43) (cid:34)(cid:85)(cid:83)(cid:0)(cid:77)(cid:65)(cid:83)(cid:84)(cid:69)(cid:82) (cid:35) (cid:49) (cid:36) (cid:54) (cid:35) (cid:49) (cid:36) (cid:54) (cid:35) (cid:49) (cid:36) (cid:54) (cid:35)(cid:35) (cid:35)(cid:35) (cid:35)(cid:35) (cid:54) (cid:54) (cid:54) (cid:51)(cid:51) (cid:51)(cid:51) (cid:51)(cid:51) (cid:45)(cid:25)(cid:19)(cid:88)(cid:88)(cid:88) (cid:45)(cid:25)(cid:19)(cid:88)(cid:88)(cid:88) (cid:45)(cid:25)(cid:19)(cid:88)(cid:88)(cid:88) (cid:50) (cid:50) (cid:50) (cid:77)(cid:69)(cid:77)(cid:79)(cid:82)(cid:89)(cid:0)(cid:68)(cid:69)(cid:86)(cid:73)(cid:67)(cid:69) (cid:77)(cid:69)(cid:77)(cid:79)(cid:82)(cid:89)(cid:0)(cid:68)(cid:69)(cid:86)(cid:73)(cid:67)(cid:69) (cid:77)(cid:69)(cid:77)(cid:79)(cid:82)(cid:89)(cid:0)(cid:68)(cid:69)(cid:86)(cid:73)(cid:67)(cid:69) (cid:35)(cid:51)(cid:19) (cid:35)(cid:51)(cid:18) (cid:35)(cid:51)(cid:17) (cid:51) (cid:47)(cid:50)(cid:39) (cid:51) (cid:47)(cid:50)(cid:39) (cid:51) (cid:47)(cid:50)(cid:39) (cid:33)(cid:41)(cid:17)(cid:20)(cid:19)(cid:23)(cid:23)(cid:66) 8/35 DocID4997 Rev 17

M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Operating features 3 Operating features 3.1 Supply voltage (V ) CC 3.1.1 Operating supply voltage (V ) CC Prior to selecting the memory and issuing instructions to it, a valid and stable V voltage CC within the specified [V (min), V (max)] range must be applied. In order to secure a stable CC CC DC supply voltage, it is recommended to decouple the V line with a suitable capacitor CC (usually of the order of 10 nF to 100 nF) close to the V /V package pins. CC SS This voltage must remain stable and valid until the end of the transmission of the instruction and, for a Write instruction, until the completion of the internal write cycle (t ). W 3.1.2 Power-up conditions When the power supply is turned on, V rises from V to V . During this time, the Chip CC SS CC Select (S) line is not allowed to float and should be driven to V , it is therefore SS recommended to connect the S line to V via a suitable pull-down resistor. SS 3.1.3 Power-up and device reset In order to prevent inadvertent Write operations during power-up, a power on reset (POR) circuit is included. At power-up (continuous rise of V ), the device does not respond to any CC instruction until V has reached the power on reset threshold voltage (this threshold is CC lower than the minimum V operating voltage defined in Operating conditions, in CC Section 10: DC and AC parameters). When V passes the POR threshold, the device is reset and is in the following state: CC • Standby Power mode • deselected (assuming that there is a pull-down resistor on the S line) 3.1.4 Power-down At power-down (continuous decrease in V ), as soon as V drops from the normal CC CC operating voltage to below the power on reset threshold voltage, the device stops responding to any instruction sent to it. During power-down, the device must be deselected and in the Standby Power mode (that is, there should be no internal Write cycle in progress). DocID4997 Rev 17 9/35 34

Memory organization M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x 4 Memory organization The M93Cx6 memory is organized either as bytes (x8) or as words (x16). If Organization Select (ORG) is left unconnected (or connected to V ) the x16 organization is selected; CC when Organization Select (ORG) is connected to Ground (V ) the x8 organization is SS selected. When the M93Cx6 is in Standby mode, Organization Select (ORG) should be set either to V or V to reach the device minimum power consumption (as any voltage SS CC between V and V applied to ORG input may increase the device Standby current). SS CC Figure 4. M93Cx6 ORG input connection (cid:57)(cid:70)(cid:70) (cid:57)(cid:70)(cid:70) (cid:57)(cid:70)(cid:70) (cid:49)(cid:82)(cid:87)(cid:3) (cid:70)(cid:82)(cid:81)(cid:81)(cid:72)(cid:70)(cid:87)(cid:72)(cid:71) (cid:50)(cid:53)(cid:42) (cid:50)(cid:53)(cid:42) (cid:50)(cid:53)(cid:42) (cid:57)(cid:86)(cid:86) (cid:57)(cid:86)(cid:86) (cid:57)(cid:86)(cid:86) (cid:91)(cid:20)(cid:25)(cid:3)(cid:82)(cid:85)(cid:74)(cid:68)(cid:81)(cid:76)(cid:93)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81) (cid:91)(cid:20)(cid:25)(cid:3)(cid:82)(cid:85)(cid:74)(cid:68)(cid:81)(cid:76)(cid:93)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81) (cid:91)(cid:27)(cid:3)(cid:82)(cid:85)(cid:74)(cid:68)(cid:81)(cid:76)(cid:93)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81) (cid:48)(cid:54)(cid:89)(cid:22)(cid:20)(cid:25)(cid:28)(cid:19)(cid:57)(cid:20) 10/35 DocID4997 Rev 17

M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Instructions 5 Instructions The instruction set of the M93Cx6 devices contains seven instructions, as summarized in Table 4 to Table 6. Each instruction consists of the following parts, as shown in Figure 5: READ, WRITE, WEN, WDS sequences: • Each instruction is preceded by a rising edge on Chip Select Input (S) with Serial Clock (C) being held low. • A start bit, which is the first ‘1’ read on Serial Data Input (D) during the rising edge of Serial Clock (C). • Two op-code bits, read on Serial Data Input (D) during the rising edge of Serial Clock (C). (Some instructions also use the first two bits of the address to define the op-code). • The address bits of the byte or word that is to be accessed. For the M93C46, the address is made up of 6 bits for the x16 organization or 7 bits for the x8 organization (see Table 4). For the M93C56 and M93C66, the address is made up of 8 bits for the x16 organization or 9 bits for the x8 organization (see Table 5). For the M93C76 and M93C86, the address is made up of 10 bits for the x16 organization or 11 bits for the x8 organization (see Table 6). The M93Cx6 devices are fabricated in CMOS technology and are therefore able to run as slow as 0 Hz (static input signals) or as fast as the maximum ratings specified in “AC characteristics” tables, in Section 10: DC and AC parameters. Table 4. Instruction set for the M93C46 x8 origination (ORG = 0) x16 origination (ORG = 1) Start Op- Instruction Description Required Required bit code Address Address Data clock Data clock (1) (1) cycles cycles Read Data from READ 1 10 A6-A0 Q7-Q0 - A5-A0 Q15-Q0 - Memory Write Data to WRITE 1 01 A6-A0 D7-D0 18 A5-A0 D15-D0 25 Memory WEN Write Enable 1 00 11X XXXX - 10 11 XXXX - 9 00X WDS Write Disable 1 00 - 10 00 XXXX - 9 XXXX Erase Byte or ERASE 1 11 A6-A0 - 10 A5-A0 - 9 Word 10X ERAL Erase All Memory 1 00 - 10 10 XXXX - 9 XXXX Write All Memory 01X WRAL 1 00 D7-D0 18 01 XXXX D15-D0 25 with same Data XXXX 1. X = Don't Care bit. DocID4997 Rev 17 11/35 34

Instructions M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Table 5. Instruction set for the M93C56 and M93C66 x8 origination (ORG = 0) x16 origination (ORG = 1) Start Op- Instruction Description Required Required bit code Address Address Data clock Data clock (1) (2) (1) (3) cycles cycles Q7- Q15- READ Read Data from Memory 1 10 A8-A0 - A7-A0 - Q0 Q0 D7- WRITE Write Data to Memory 1 01 A8-A0 20 A7-A0 D15-D0 27 D0 1 1XXX 11XX WEN Write Enable 1 00 - 12 - 11 XXXX XXXX 0 0XXX 00XX WDS Write Disable 1 00 - 12 - 11 XXXX XXXX ERASE Erase Byte or Word 1 11 A8-A0 - 12 A7-A0 - 11 1 0XXX 10XX ERAL Erase All Memory 1 00 - 12 - 11 XXXX XXXX Write All Memory with 0 1XXX D7- 01XX WRAL 1 00 20 D15-D0 27 same Data XXXX D0 XXXX 1. X = Don't Care bit. 2. Address bit A8 is not decoded by the M93C56. 3. Address bit A7 is not decoded by the M93C56. Table 6. Instruction set for the M93C76 and M93C86 x8 Origination (ORG = 0) x16 Origination (ORG = 1) Start Op- Instruction Description Required Required bit code Address Address Data clock Data clock (1)(2) (1) (3) cycles cycles Read Data from READ 1 10 A10-A0 Q7-Q0 - A9-A0 Q15-Q0 - Memory Write Data to WRITE 1 01 A10-A0 D7-D0 22 A9-A0 D15-D0 29 Memory 11X XXXX 11 XXXX WEN Write Enable 1 00 - 14 - 13 XXXX XXXX 00X XXXX 00 XXXX WDS Write Disable 1 00 - 14 - 13 XXXX XXXX ERASE Erase Byte or Word 1 11 A10-A0 - 14 A9-A0 - 13 10X XXXX 10 XXXX ERAL Erase All Memory 1 00 - 14 - 13 XXXX XXXX Write All Memory 01X XXXX 01 XXXX WRAL 1 00 D7-D0 22 D15-D0 29 with same Data XXXX XXXX 1. X = Don't Care bit. 2. Address bit A10 is not decoded by the M93C76. 3. Address bit A9 is not decoded by the M93C76. 12/35 DocID4997 Rev 17

M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Instructions 5.1 Read Data from Memory The Read Data from Memory (READ) instruction outputs data on Serial Data Output (Q). When the instruction is received, the op-code and address are decoded, and the data from the memory is transferred to an output shift register. A dummy 0 bit is output first, followed by the 8-bit byte or 16-bit word, with the most significant bit first. Output data changes are triggered by the rising edge of Serial Clock (C). The M93Cx6 automatically increments the internal address register and clocks out the next byte (or word) as long as the Chip Select Input (S) is held High. In this case, the dummy 0 bit is not output between bytes (or words) and a continuous stream of data can be read (the address counter automatically rolls over to 00h when the highest address is reached). 5.2 Erase and Write data 5.2.1 Write Enable and Write Disable The Write Enable (WEN) instruction enables the future execution of erase or write instructions, and the Write Disable (WDS) instruction disables it. When power is first applied, the M93Cx6 initializes itself so that erase and write instructions are disabled. After a Write Enable (WEN) instruction has been executed, erasing and writing remains enabled until a Write Disable (WDS) instruction is executed, or until V falls below the power-on CC reset threshold voltage. To protect the memory contents from accidental corruption, it is advisable to issue the Write Disable (WDS) instruction after every write cycle. The Read Data from Memory (READ) instruction is not affected by the Write Enable (WEN) or Write Disable (WDS) instructions. 5.2.2 Write For the Write Data to Memory (WRITE) instruction, 8 or 16 data bits follow the op-code and address bits. These form the byte or word that is to be written. As with the other bits, Serial Data Input (D) is sampled on the rising edge of Serial Clock (C). After the last data bit has been sampled, the Chip Select Input (S) must be taken low before the next rising edge of Serial Clock (C). If Chip Select Input (S) is brought low before or after this specific time frame, the self-timed programming cycle will not be started, and the addressed location will not be programmed. The completion of the cycle can be detected by monitoring the READY/BUSY line, as described later in this document. Once the Write cycle has been started, it is internally self-timed (the external clock signal on Serial Clock (C) may be stopped or left running after the start of a Write cycle). The Write cycle is automatically preceded by an Erase cycle, so it is unnecessary to execute an explicit erase instruction before a Write Data to Memory (WRITE) instruction. DocID4997 Rev 17 13/35 34

Instructions M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Figure 5. READ, WRITE, WEN, WDS sequences (cid:50)(cid:69)(cid:65)(cid:68) (cid:51) (cid:36) (cid:17)(cid:17)(cid:16)(cid:33)(cid:78) (cid:33)(cid:16) (cid:49) (cid:49)(cid:78) (cid:49)(cid:16) (cid:33)(cid:36)(cid:36)(cid:50) (cid:36)(cid:33)(cid:52)(cid:33)(cid:0)(cid:47)(cid:53)(cid:52) (cid:47)(cid:48) (cid:35)(cid:47)(cid:36)(cid:37) (cid:55)(cid:82)(cid:73)(cid:84)(cid:69) (cid:51) (cid:35)(cid:40)(cid:37)(cid:35)(cid:43) (cid:51)(cid:52)(cid:33)(cid:52)(cid:53)(cid:51) (cid:36) (cid:17)(cid:16)(cid:17)(cid:33)(cid:78) (cid:33)(cid:16) (cid:36)(cid:78) (cid:36)(cid:16) (cid:49) (cid:33)(cid:36)(cid:36)(cid:50) (cid:36)(cid:33)(cid:52)(cid:33)(cid:0)(cid:41)(cid:46) (cid:34)(cid:53)(cid:51)(cid:57) (cid:50)(cid:37)(cid:33)(cid:36)(cid:57) (cid:47)(cid:48) (cid:35)(cid:47)(cid:36)(cid:37) (cid:55)(cid:82)(cid:73)(cid:84)(cid:69) (cid:51) (cid:55)(cid:82)(cid:73)(cid:84)(cid:69)(cid:0) (cid:51) (cid:37)(cid:78)(cid:65)(cid:66)(cid:76)(cid:69) (cid:36)(cid:73)(cid:83)(cid:65)(cid:66)(cid:76)(cid:69) (cid:36) (cid:17)(cid:16)(cid:16)(cid:17)(cid:17)(cid:56)(cid:78) (cid:56)(cid:16) (cid:36) (cid:17)(cid:16)(cid:16)(cid:16)(cid:16)(cid:56)(cid:78) (cid:56)(cid:16) (cid:47)(cid:48) (cid:47)(cid:48) (cid:35)(cid:47)(cid:36)(cid:37) (cid:35)(cid:47)(cid:36)(cid:37) (cid:33)(cid:41)(cid:16)(cid:16)(cid:24)(cid:23)(cid:24)(cid:68) 1. For the meanings of An, Xn, Qn and Dn, see Table 4, Table 5 and Table 6. 14/35 DocID4997 Rev 17

M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Instructions 5.2.3 Write All As with the Erase All Memory (ERAL) instruction, the format of the Write All Memory with same Data (WRAL) instruction requires that a dummy address be provided. As with the Write Data to Memory (WRITE) instruction, the format of the Write All Memory with same Data (WRAL) instruction requires that an 8-bit data byte, or 16-bit data word, be provided. This value is written to all the addresses of the memory device. The completion of the cycle can be detected by monitoring the READY/BUSY line, as described next. Figure 6. WRAL sequence (cid:55)(cid:50)(cid:41)(cid:52)(cid:37) (cid:51) (cid:33)(cid:44)(cid:44) (cid:35)(cid:40)(cid:37)(cid:35)(cid:43) (cid:51)(cid:52)(cid:33)(cid:52)(cid:53)(cid:51) (cid:36) (cid:17)(cid:16)(cid:16)(cid:16)(cid:17)(cid:56)(cid:78) (cid:56)(cid:16) (cid:36)(cid:78) (cid:36)(cid:16) (cid:49) (cid:33)(cid:36)(cid:36)(cid:50) (cid:36)(cid:33)(cid:52)(cid:33)(cid:0)(cid:41)(cid:46) (cid:34)(cid:53)(cid:51)(cid:57) (cid:50)(cid:37)(cid:33)(cid:36)(cid:57) (cid:47)(cid:48) (cid:35)(cid:47)(cid:36)(cid:37) (cid:33)(cid:41)(cid:16)(cid:16)(cid:24)(cid:24)(cid:16)(cid:35) 1. For the meanings of Xn and Dn, please see Table 4, Table 5 and Table 6. DocID4997 Rev 17 15/35 34

Instructions M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x 5.2.4 Erase Byte or Word The Erase Byte or Word (ERASE) instruction sets the bits of the addressed memory byte (or word) to 1. Once the address has been correctly decoded, the falling edge of the Chip Select Input (S) starts the self-timed Erase cycle. The completion of the cycle can be detected by monitoring the READY/BUSY line, as described in Section 6: READY/BUSY status. Figure 7. ERASE, ERAL sequences (cid:37)(cid:50)(cid:33)(cid:51)(cid:37) (cid:51) (cid:35)(cid:40)(cid:37)(cid:35)(cid:43) (cid:51)(cid:52)(cid:33)(cid:52)(cid:53)(cid:51) (cid:36) (cid:17)(cid:17)(cid:17)(cid:33)(cid:78) (cid:33)(cid:16) (cid:49) (cid:33)(cid:36)(cid:36)(cid:50) (cid:34)(cid:53)(cid:51)(cid:57) (cid:50)(cid:37)(cid:33)(cid:36)(cid:57) (cid:47)(cid:48) (cid:35)(cid:47)(cid:36)(cid:37) (cid:37)(cid:50)(cid:33)(cid:51)(cid:37) (cid:51) (cid:33)(cid:44)(cid:44) (cid:35)(cid:40)(cid:37)(cid:35)(cid:43) (cid:51)(cid:52)(cid:33)(cid:52)(cid:53)(cid:51) (cid:36) (cid:17)(cid:16)(cid:16)(cid:17)(cid:16)(cid:56)(cid:78) (cid:56)(cid:16) (cid:49) (cid:33)(cid:36)(cid:36)(cid:50) (cid:34)(cid:53)(cid:51)(cid:57) (cid:50)(cid:37)(cid:33)(cid:36)(cid:57) (cid:47)(cid:48) (cid:35)(cid:47)(cid:36)(cid:37) (cid:33)(cid:41)(cid:16)(cid:16)(cid:24)(cid:23)(cid:25)(cid:34) 1. For the meanings of An and Xn, please see Table 4, Table 5 and Table 6. 5.2.5 Erase All The Erase All Memory (ERAL) instruction erases the whole memory (all memory bits are set to 1). The format of the instruction requires that a dummy address be provided. The Erase cycle is conducted in the same way as the Erase instruction (ERASE). The completion of the cycle can be detected by monitoring the READY/BUSY line, as described in Section 6: READY/BUSY status. 16/35 DocID4997 Rev 17

M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x READY/BUSY status 6 READY/BUSY status While the Write or Erase cycle is underway, for a WRITE, ERASE, WRAL or ERAL instruction, the Busy signal (Q=0) is returned whenever Chip Select input (S) is driven high. (Please note, though, that there is an initial delay, of t , before this status information SLSH becomes available). In this state, the M93Cx6 ignores any data on the bus. When the Write cycle is completed, and Chip Select Input (S) is driven high, the Ready signal (Q=1) indicates that the M93Cx6 is ready to receive the next instruction. Serial Data Output (Q) remains set to 1 until the Chip Select Input (S) is brought low or until a new start bit is decoded. 7 Initial delivery state The device is delivered with all bits in the memory array set to 1 (each byte contains FFh). DocID4997 Rev 17 17/35 34

Clock pulse counter M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x 8 Clock pulse counter In a noisy environment, the number of pulses received on Serial Clock (C) may be greater than the number delivered by the master (the microcontroller). This can lead to a misalignment of the instruction of one or more bits (as shown in Figure 8) and may lead to the writing of erroneous data at an erroneous address. To avoid this problem, the M93Cx6 has an on-chip counter that counts the clock pulses from the start bit until the falling edge of the Chip Select Input (S). If the number of clock pulses received is not the number expected, the WRITE, ERASE, ERAL or WRAL instruction is aborted, and the contents of the memory are not modified. The number of clock cycles expected for each instruction, and for each member of the M93Cx6 family, are summarized in Table 4: Instruction set for the M93C46 to Table 6: Instruction set for the M93C76 and M93C86. For example, a Write Data to Memory (WRITE) instruction on the M93C56 (or M93C66) expects 20 clock cycles (for the x8 organization) from the start bit to the falling edge of Chip Select Input (S). That is: 1 Start bit + 2 Op-code bits + 9 Address bits + 8 Data bits Figure 8. Write sequence with one clock glitch (cid:51) (cid:35) (cid:36) (cid:33)(cid:78) (cid:33)(cid:78)(cid:13)(cid:17) (cid:33)(cid:78)(cid:13)(cid:18) (cid:51)(cid:52)(cid:33)(cid:50)(cid:52) (cid:2)(cid:16)(cid:2) (cid:2)(cid:17)(cid:2) (cid:39)(cid:76)(cid:73)(cid:84)(cid:67)(cid:72) (cid:36)(cid:16) (cid:33)(cid:36)(cid:36)(cid:50)(cid:37)(cid:51)(cid:51)(cid:0)(cid:33)(cid:46)(cid:36)(cid:0)(cid:36)(cid:33)(cid:52)(cid:33) (cid:55)(cid:50)(cid:41)(cid:52)(cid:37) (cid:33)(cid:50)(cid:37)(cid:0)(cid:51)(cid:40)(cid:41)(cid:38)(cid:52)(cid:37)(cid:36)(cid:0)(cid:34)(cid:57)(cid:0)(cid:47)(cid:46)(cid:37)(cid:0)(cid:34)(cid:41)(cid:52) (cid:33)(cid:41)(cid:16)(cid:17)(cid:19)(cid:25)(cid:21) 18/35 DocID4997 Rev 17

M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Maximum ratings 9 Maximum ratings Stressing the device outside the ratings listed in the Absolute maximum ratings table may cause permanent damage to the device. These are stress ratings only, and operation of the device at these, or any other conditions outside those indicated in the operating sections of this specification, is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Table 7. Absolute maximum ratings Symbol Parameter Min. Max. Unit Ambient operating temperature –40 130 °C T Storage temperature –65 150 °C STG PDIP - 260(1) T Lead temperature during soldering °C LEAD other packages See note (2) V Output range (Q = V or Hi-Z) –0.50 V +0.5 V OUT OH CC V Input range –0.50 V +1 V IN CC V Supply voltage –0.50 6.5 V CC V Electrostatic discharge voltage (human body model)(3) - 4000 V ESD 1. TLEAD max must not be applied for more than 10 s. 2. Compliant with JEDEC standard J-STD-020D (for small-body, Sn-Pb or Pb free assembly), the ST ECOPACK® 7191395 specification, and the European directive on Restrictions on Hazardous Substances (RoHS directive 2011/65/EU of July 2011). 3. Positive and negative pulses applied on pin pairs, according to the AEC-Q100-002 (compliant with ANSI/ESDA/JEDEC JS-001-2012), C1 = 100 pF, R1 = 1500 Ω, R2 = 500 Ω). DocID4997 Rev 17 19/35 34

DC and AC parameters M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x 10 DC and AC parameters This section summarizes the operating and measurement conditions, and the DC and AC characteristics of the device. Table 8. Operating conditions (M93Cx6-W) Symbol Parameter Min. Max. Unit V Supply voltage 2.5 5.5 V CC T Ambient operating temperature –40 85 °C A Table 9. Operating conditions (M93Cx6-R) Symbol Parameter Min. Max. Unit V Supply voltage 1.8 5.5 V CC T Ambient operating temperature –40 85 °C A Table 10. Cycling performance(1) Symbol Parameter Test conditions Min. Max. Unit TA ≤ 25 °C, - 4,000,000 V (min) < V < V (max) CC CC CC Ncycle Write cycle endurance Write cycle TA = 85 °C, - 1,200,000 V (min) < V < V (max) CC CC CC 1. Cycling performance for products identified by process letter K. Table 11. Memory cell data retention(1) Parameter Test conditions Min. Unit Data retention TA = 55 °C 200 Year 1. For products identified by process letter K. The data retention behavior is checked in production, while the 200-year limit is defined from characterization and qualification results. Table 12. AC measurement conditions Symbol Parameter Min. Max. Unit C Load capacitance 100 pF L - Input rise and fall times - 50 ns - Input voltage levels 0.2 V to 0.8 V V CC CC - Input timing reference voltages 0.3 V to 0.7 V V CC CC - Output timing reference voltages 0.3 V to 0.7 V V CC CC 20/35 DocID4997 Rev 17

M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x DC and AC parameters Figure 9. AC testing input output waveforms (cid:45)(cid:25)(cid:19)(cid:35)(cid:56)(cid:56) (cid:19)(cid:17)(cid:27)(cid:57)(cid:38)(cid:38) (cid:19)(cid:17)(cid:26)(cid:57)(cid:38)(cid:38) (cid:41)(cid:78)(cid:80)(cid:85)(cid:84)(cid:0)(cid:65)(cid:78)(cid:68)(cid:0)(cid:79)(cid:85)(cid:84)(cid:80)(cid:85)(cid:84) (cid:41)(cid:78)(cid:80)(cid:85)(cid:84)(cid:0)(cid:86)(cid:79)(cid:76)(cid:84)(cid:65)(cid:71)(cid:69)(cid:0)(cid:76)(cid:69)(cid:86)(cid:69)(cid:76)(cid:83) (cid:84)(cid:73)(cid:77)(cid:73)(cid:78)(cid:71)(cid:0)(cid:82)(cid:69)(cid:70)(cid:69)(cid:82)(cid:69)(cid:78)(cid:67)(cid:69)(cid:0)(cid:76)(cid:69)(cid:86)(cid:69)(cid:76)(cid:83) (cid:19)(cid:17)(cid:22)(cid:57)(cid:38)(cid:38) (cid:19)(cid:17)(cid:21)(cid:57)(cid:38)(cid:38) (cid:45)(cid:51)(cid:17)(cid:25)(cid:23)(cid:24)(cid:24)(cid:54)(cid:19) Table 13. Input and output capacitance Symbol Parameter Test condition(1) Min Max Unit C Output capacitance V = 0V - 8 pF OUT OUT C Input capacitance V = 0V - 6 pF IN IN 1. Sampled only, not 100% tested, at T = 25 °C and a frequency of 1 MHz. A Table 14. DC characteristics (M93Cx6-W, device grade 6) Test condition (in addition to Symbol Parameter the conditions defined in Min. Max. Unit Table 8 and Table 12) I Input leakage current 0V ≤ V ≤ V - ±2.5 µA LI IN CC I Output leakage current 0V ≤ V ≤ V , Q in Hi-Z - ±2.5 µA LO OUT CC V = 5 V, S = V , f = 2 MHz, CC IH - 2 mA Q = open I Operating supply current CC V = 2.5 V, S = V , f = 2 MHz, CC IH - 1 mA Q = open V = 2.5 V, S = V , C = V , CC SS SS ORG = V or V , - 2(1) µA SS CC pin7 = V , V or Hi-Z CC SS I Standby supply current CC1 V = 5.5 V, S = V , C = V , CC SS SS ORG = V or V , - 3(2) µA SS CC pin7 = VCC, V or Hi-Z SS V Input low voltage (D, C, S) - –0.45 0.2 V V IL CC V Input high voltage (D, C, S) - 0.7 V V + 1 V IH CC CC V = 5 V, I = 2.1 mA - 0.4 V CC OL V Output low voltage (Q) OL V = 2.5 V, I = 100 µA - 0.2 V CC OL V = 5 V, I = – 400 µA 0.8 V - V CC OH CC V Output high voltage (Q) OH V = 2.5 V, I = – 100 µA V –0.2 - V CC OH CC 1. 5 µA for previous devices identified with the process letter G. 2. Tested only for current devices identified with the process letter K. DocID4997 Rev 17 21/35 34

DC and AC parameters M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Table 15. DC characteristics (M93Cx6-R) Symbol Parameter Test condition Min. Max. Unit I Input leakage current 0V ≤ V ≤ V - ±2.5 µA LI IN CC I Output leakage current 0V ≤ V ≤ V , Q in Hi-Z - ±2.5 µA LO OUT CC V = 5 V, S = V , f = 2 MHz, CC IH - 2 mA Q = open I Operating supply current CC V = 1.8 V, S = V , f = 1 MHz, CC IH - 1 mA Q = open V = 1.8 V, S = V , C = V , CC SS SS I Standby supply current ORG = V or V , - 1(1) µA CC1 SS CC pin7 = V , V or Hi-Z CC SS V Input low voltage (D, C, S) - –0.45 0.2 V V IL CC V Input high voltage (D, C, S) - 0.8 V V + 1 V IH CC CC V Output low voltage (Q) V = 1.8 V, I = 100 µA - 0.2 V OL CC OL V Output high voltage (Q) V = 1.8 V, I = –100 µA V –0.2 - V OH CC OH CC 1. 2 µA for previous devices identified with process letter G. Table 16. AC characteristics (M93Cx6-W, M93Cx6-R(1), device grade 6) Test conditions specified in Table 8 and Table 12 Symbol Alt. Parameter Min. Max. Unit f f Clock frequency D.C. 2 MHz C SK t Chip Select low to Clock high 50 - ns SLCH t t Chip Select setup time 50 - ns SHCH CSS t (2) t Chip Select low to Chip Select high 200 - ns SLSH CS t (3) t Clock high time 200 - ns CHCL SKH t (3) t Clock low time 200 - ns CLCH SKL t t Data in setup time 50 - ns DVCH DIS t t Data in hold time 50 - ns CHDX DIH t t Clock setup time (relative to S) 50 - ns CLSH SKS t t Chip Select hold time 0 - ns CLSL CSH t t Chip Select to READY/BUSY status - 200 ns SHQV SV t t Chip Select low to output Hi-Z - 100 ns SLQZ DF t t Delay to output low - 200 ns CHQL PD0 t t Delay to output valid - 200 ns CHQV PD1 t t Erase or Write cycle time - 5 ms W WP 1. All M93Cx6-R devices operate with a clock frequency of 1MHz, as defined in Table 17. Only the new M93Cx6-R devices (identified with the process letter K) can operate with the 2 MHz timing values defined in this table. 2. Chip Select Input (S) must be brought low for a minimum of t between consecutive instruction cycles. SLSH 3. t + t ≥ 1 / f . CHCL CLCH C 22/35 DocID4997 Rev 17

M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x DC and AC parameters Table 17. AC characteristics (M93Cx6-R)(1) Test conditions specified in Table 9 and Table 12 Symbol Alt. Parameter Min. Max. Unit f f Clock frequency D.C. 1 MHz C SK t Chip Select low to Clock high 250 - ns SLCH t t Chip Select setup time 50 - ns SHCH CSS t (2) t Chip Select low to Chip Select high 250 - ns SLSH CS t (3) t Clock high time 250 - ns CHCL SKH t (3) t Clock low time 250 - ns CLCH SKL t t Data in setup time 100 - ns DVCH DIS t t Data in hold time 100 - ns CHDX DIH t t Clock setup time (relative to S) 100 - ns CLSH SKS t t Chip Select hold time 0 - ns CLSL CSH t t Chip Select to READY/BUSY status - 400 ns SHQV SV t t Chip Select low to output Hi-Z - 200 ns SLQZ DF t t Delay to output low - 400 ns CHQL PD0 t t Delay to output valid - 400 ns CHQV PD1 t t Erase or Write cycle time - 10 ms W WP 1. The new M93Cx6-R devices identified with the process letter K can operate with a clock frequency of 2 MHz and an Erase (or Write) cycle of 5 ms, as shown in Table 16. 2. Chip Select Input (S) must be brought low for a minimum of t between consecutive instruction cycles. SLSH 3. t + t ≥ 1 / f . CHCL CLCH C DocID4997 Rev 17 23/35 34

DC and AC parameters M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Figure 10. Synchronous timing (Start and op-code input) (cid:87)(cid:38)(cid:47)(cid:54)(cid:43) (cid:87)(cid:38)(cid:43)(cid:38)(cid:47) (cid:35) (cid:87)(cid:54)(cid:43)(cid:38)(cid:43) (cid:87)(cid:38)(cid:47)(cid:38)(cid:43) (cid:51) (cid:87)(cid:39)(cid:57)(cid:38)(cid:43) (cid:87)(cid:38)(cid:43)(cid:39)(cid:59) (cid:36) (cid:54)(cid:55)(cid:36)(cid:53)(cid:55) (cid:50)(cid:51)(cid:3)(cid:38)(cid:50)(cid:39)(cid:40) (cid:50)(cid:51)(cid:3)(cid:38)(cid:50)(cid:39)(cid:40) (cid:54)(cid:55)(cid:36)(cid:53)(cid:55) (cid:50)(cid:51)(cid:3)(cid:38)(cid:50)(cid:39)(cid:40)(cid:3)(cid:44)(cid:49)(cid:51)(cid:56)(cid:55) (cid:65)(cid:73)(cid:16)(cid:17)(cid:20)(cid:18)(cid:24) Figure 11. Synchronous timing (Read) (cid:38) (cid:87)(cid:38)(cid:47)(cid:54)(cid:47) (cid:54) (cid:87)(cid:39)(cid:57)(cid:38)(cid:43) (cid:87)(cid:38)(cid:43)(cid:39)(cid:59) (cid:87)(cid:38)(cid:43)(cid:52)(cid:57) (cid:87)(cid:54)(cid:47)(cid:54)(cid:43) (cid:39) (cid:36)(cid:81) (cid:36)(cid:19) (cid:87)(cid:54)(cid:47)(cid:52)(cid:61) (cid:87)(cid:38)(cid:43)(cid:52)(cid:47) (cid:43)(cid:76)(cid:16)(cid:61) (cid:52) (cid:52)(cid:20)(cid:24)(cid:18)(cid:52)(cid:26) (cid:52)(cid:19) (cid:36)(cid:39)(cid:39)(cid:53)(cid:40)(cid:54)(cid:54)(cid:3)(cid:44)(cid:49)(cid:51)(cid:56)(cid:55) (cid:39)(cid:36)(cid:55)(cid:36)(cid:3)(cid:50)(cid:56)(cid:55)(cid:51)(cid:56)(cid:55) (cid:36)(cid:44)(cid:19)(cid:19)(cid:27)(cid:21)(cid:19)(cid:38) Figure 12. Synchronous timing (Write) (cid:87)(cid:54)(cid:47)(cid:38)(cid:43) (cid:35) (cid:87)(cid:38)(cid:47)(cid:54)(cid:47) (cid:51) (cid:87)(cid:39)(cid:57)(cid:38)(cid:43) (cid:87)(cid:38)(cid:43)(cid:39)(cid:59) (cid:87)(cid:54)(cid:47)(cid:54)(cid:43) (cid:36) (cid:36)(cid:81) (cid:36)(cid:19)(cid:18)(cid:39)(cid:19) (cid:87)(cid:54)(cid:43)(cid:52)(cid:57) (cid:87)(cid:54)(cid:47)(cid:52)(cid:61) (cid:43)(cid:76)(cid:16)(cid:61) (cid:49) (cid:37)(cid:56)(cid:54)(cid:60) (cid:53)(cid:40)(cid:36)(cid:39)(cid:60) (cid:87)(cid:58) (cid:36)(cid:39)(cid:39)(cid:53)(cid:40)(cid:54)(cid:54)(cid:18)(cid:39)(cid:36)(cid:55)(cid:36)(cid:3)(cid:44)(cid:49)(cid:51)(cid:56)(cid:55) (cid:58)(cid:53)(cid:44)(cid:55)(cid:40)(cid:3)(cid:38)(cid:60)(cid:38)(cid:47)(cid:40) (cid:65)(cid:73)(cid:16)(cid:17)(cid:20)(cid:18)(cid:25) 24/35 DocID4997 Rev 17

M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Package information 11 Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. 11.1 PDIP8 package information Figure 13. PDIP8 – 8 lead plastic dual in-line package, 300 mils body width, package outline (cid:37) (cid:66)(cid:18) (cid:33)(cid:18) (cid:33) (cid:33)(cid:17) (cid:44) (cid:67) (cid:66) (cid:69) (cid:69)(cid:33) (cid:69)(cid:34) (cid:36) (cid:24) (cid:37)(cid:17) (cid:17) (cid:48)(cid:36)(cid:41)(cid:48)(cid:13)(cid:34) 1. Drawing is not to scale. Table 18. PDIP8 – 8 lead plastic dual in-line package, 300 mils body width, package mechanical data millimeters inches(1) Symbol Typ. Min. Max. Typ. Min. Max. A - - 5.33 - - 0.2098 A1 - 0.38 - - 0.015 - A2 3.3 2.92 4.95 0.1299 0.115 0.1949 b 0.46 0.36 0.56 0.0181 0.0142 0.022 b2 1.52 1.14 1.78 0.0598 0.0449 0.0701 c 0.25 0.2 0.36 0.0098 0.0079 0.0142 D 9.27 9.02 10.16 0.365 0.3551 0.4 E 7.87 7.62 8.26 0.3098 0.3 0.3252 E1 6.35 6.1 7.11 0.25 0.2402 0.2799 DocID4997 Rev 17 25/35 34

Package information M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Table 18. PDIP8 – 8 lead plastic dual in-line package, 300 mils body width, package mechanical data (continued) millimeters inches(1) Symbol Typ. Min. Max. Typ. Min. Max. e 2.54 - - 0.1 - - eA 7.62 - - 0.3 - - eB - - 10.92 - - 0.4299 L 3.3 2.92 3.81 0.1299 0.115 0.15 1. Values in inches are converted from mm and rounded to 4 decimal digits. 11.2 SO8N package information Figure 14. SO8N – 8-lead plastic small outline, 150 mils body width, package outline (cid:75)(cid:3)(cid:91)(cid:3)(cid:23)(cid:24)(cid:219) (cid:36)(cid:21) (cid:36) (cid:70) (cid:70)(cid:70)(cid:70) (cid:69) (cid:72) (cid:19)(cid:17)(cid:21)(cid:24)(cid:3)(cid:80)(cid:80) (cid:39) (cid:42)(cid:36)(cid:56)(cid:42)(cid:40)(cid:3)(cid:51)(cid:47)(cid:36)(cid:49)(cid:40) (cid:78) (cid:27) (cid:40)(cid:20) (cid:40) (cid:20) (cid:36)(cid:20) (cid:47) (cid:47)(cid:20) (cid:54)(cid:50)(cid:16)(cid:36)(cid:66)(cid:57)(cid:21) 1. Drawing is not to scale. Table 19. SO8N – 8-lead plastic small outline, 150 mils body width, package mechanical data millimeters inches(1) Symbol Min. Typ. Max. Min. Typ. Max. A - - 1.750 - - 0.0689 A1 0.100 - 0.250 0.0039 - 0.0098 A2 1.250 - - 0.0492 - - b 0.280 - 0.480 0.0110 - 0.0189 c 0.170 - 0.230 0.0067 - 0.0091 D 4.800 4.900 5.000 0.1890 0.1929 0.1969 E 5.800 6.000 6.200 0.2283 0.2362 0.2441 E1 3.800 3.900 4.000 0.1496 0.1535 0.1575 e - 1.270 - - 0.0500 - h 0.250 - 0.500 0.0098 - 0.0197 26/35 DocID4997 Rev 17

M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Package information Table 19. SO8N – 8-lead plastic small outline, 150 mils body width, package mechanical data (continued) millimeters inches(1) Symbol Min. Typ. Max. Min. Typ. Max. k 0° - 8° 0° - 8° L 0.400 - 1.270 0.0157 - 0.0500 L1 - 1.040 - - 0.0409 - ccc - - 0.100 - - 0.0039 1. Values in inches are converted from mm and rounded to four decimal digits. Figure 15. SO8N – 8-lead plastic small outline, 150 mils body width, package recommended footprint (cid:19)(cid:17)(cid:25)(cid:3)(cid:11)(cid:91)(cid:27)(cid:12) (cid:28)(cid:26) (cid:22)(cid:17)(cid:25)(cid:17) (cid:20)(cid:17)(cid:21)(cid:26) (cid:50)(cid:26)(cid:66)(cid:54)(cid:50)(cid:27)(cid:49)(cid:66)(cid:41)(cid:51)(cid:66)(cid:57)(cid:20) 1. Dimensions are expressed in millimeters. DocID4997 Rev 17 27/35 34

Package information M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x 11.3 UFDFN8 package information Figure 16. UFDFN8 - 8-lead, 2 × 3 mm, 0.5 mm pitch ultra thin profile fine pitch dual flat package outline (cid:39) (cid:36) (cid:37) (cid:49) (cid:36) (cid:36)(cid:20) (cid:51)(cid:76)(cid:81)(cid:3)(cid:6)(cid:20)(cid:3) (cid:70)(cid:70)(cid:70) (cid:18) (cid:38) (cid:44)(cid:39)(cid:3)(cid:80)(cid:68)(cid:85)(cid:78)(cid:76)(cid:81)(cid:74) (cid:40) (cid:72)(cid:72)(cid:72) (cid:38) (cid:54)(cid:72)(cid:68)(cid:87)(cid:76)(cid:81)(cid:74)(cid:3)(cid:83)(cid:79)(cid:68)(cid:81)(cid:72) (cid:36)(cid:22) (cid:54)(cid:76)(cid:71)(cid:72)(cid:3)(cid:89)(cid:76)(cid:72)(cid:90) (cid:20) (cid:21) (cid:21)(cid:91) (cid:68)(cid:68)(cid:68) (cid:38) (cid:21)(cid:91) (cid:68)(cid:68)(cid:68)(cid:38) (cid:55)(cid:82)(cid:83)(cid:3)(cid:89)(cid:76)(cid:72)(cid:90) (cid:39)(cid:21) (cid:39)(cid:68)(cid:87)(cid:88)(cid:80)(cid:3)(cid:36) (cid:72) (cid:69) (cid:20) (cid:21) (cid:47)(cid:20) (cid:47)(cid:22) (cid:47) (cid:47)(cid:22) (cid:51)(cid:76)(cid:81)(cid:3)(cid:6)(cid:20)(cid:3) (cid:40)(cid:21) (cid:44)(cid:39)(cid:3)(cid:80)(cid:68)(cid:85)(cid:78)(cid:76)(cid:81)(cid:74) (cid:72)(cid:18)(cid:21) (cid:47)(cid:20) (cid:72) (cid:55)(cid:72)(cid:85)(cid:80)(cid:76)(cid:81)(cid:68)(cid:79)(cid:3)(cid:87)(cid:76)(cid:83) (cid:46) (cid:47) (cid:39)(cid:72)(cid:87)(cid:68)(cid:76)(cid:79)(cid:3)(cid:179)(cid:36)(cid:180) (cid:40)(cid:89)(cid:72)(cid:81)(cid:3)(cid:87)(cid:72)(cid:85)(cid:80)(cid:76)(cid:81)(cid:68)(cid:79) (cid:49)(cid:39)(cid:16)(cid:20)(cid:3)(cid:91)(cid:72) (cid:37)(cid:82)(cid:87)(cid:87)(cid:82)(cid:80)(cid:3)(cid:89)(cid:76)(cid:72)(cid:90) (cid:54)(cid:72)(cid:72)(cid:3)(cid:39)(cid:72)(cid:87)(cid:68)(cid:76)(cid:79)(cid:3)(cid:179)(cid:36)(cid:180) (cid:61)(cid:58)(cid:69)(cid:66)(cid:48)(cid:40)(cid:66)(cid:57)(cid:20) 1. Max. package warpage is 0.05 mm. 2. Exposed copper is not systematic and can appear partially or totally according to the cross section. 3. Drawing is not to scale. 4. The central pad (the area E2 by D2 in the above illustration) must be either connected to V or left floating ss (not connected) in the end application. 28/35 DocID4997 Rev 17

M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Package information T able 20. UFDFN8 - 8-lead, 2 × 3 mm, 0.5 mm pitch ultra thin profile fine pitch dual flat package mechanical data millimeters inches(1) Symbol Min Typ Max Min Typ Max A 0.450 0.550 0.600 0.0177 0.0217 0.0236 A1 0.000 0.020 0.050 0.0000 0.0008 0.0020 b(2) 0.200 0.250 0.300 0.0079 0.0098 0.0118 D 1.900 2.000 2.100 0.0748 0.0787 0.0827 D2 1.200 - 1.600 0.0472 - 0.0630 E 2.900 3.000 3.100 0.1142 0.1181 0.1220 E2 1.200 - 1.600 0.0472 - 0.0630 e - 0.500 - 0.0197 K 0.300 - - 0.0118 - - L 0.300 - 0.500 0.0118 - 0.0197 L1 - - 0.150 - - 0.0059 L3 0.300 - - 0.0118 - - aaa - - 0.150 - - 0.0059 bbb - - 0.100 - - 0.0039 ccc - - 0.100 - - 0.0039 ddd - - 0.050 - - 0.0020 eee(3) - - 0.080 - - 0.0031 1. Values in inches are converted from mm and rounded to 4 decimal digits. 2. Dimension b applies to plated terminal and is measured between 0.15 and 0.30 mm from the terminal tip. 3. Applied for exposed die paddle and terminals. Exclude embedding part of exposed die paddle from measuring. DocID4997 Rev 17 29/35 34

Package information M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x 11.4 TSSOP8 package information Figure 17.TSSOP8 – 8-lead thin shrink small outline, 3 x 4.4 mm, 0.5 mm pitch, package outline (cid:24) (cid:1012) (cid:1009) (cid:272) (cid:28)(cid:1005) (cid:28) (cid:1005) (cid:1008) (cid:626) (cid:4)(cid:1005) (cid:62) (cid:4) (cid:4)(cid:1006) (cid:18)(cid:87) (cid:62)(cid:1005) (cid:271) (cid:286) (cid:55)(cid:54)(cid:54)(cid:50)(cid:51)(cid:27)(cid:36)(cid:48)(cid:66)(cid:57)(cid:21) 1. Drawing is not to scale. Table 21. TSSOP8 – 8-lead thin shrink small outline, 3 x 4.4 mm, 0.5 mm pitch, package mechanical data millimeters inches(1) Symbol Min. Typ. Max. Min. Typ. Max. A - - 1.200 - - 0.0472 A1 0.050 - 0.150 0.0020 - 0.0059 A2 0.800 1.000 1.050 0.0315 0.0394 0.0413 b 0.190 - 0.300 0.0075 - 0.0118 c 0.090 - 0.200 0.0035 - 0.0079 CP - - 0.100 - - 0.0039 D 2.900 3.000 3.100 0.1142 0.1181 0.1220 e - 0.650 - - 0.0256 - E 6.200 6.400 6.600 0.2441 0.2520 0.2598 E1 4.300 4.400 4.500 0.1693 0.1732 0.1772 L 0.450 0.600 0.750 0.0177 0.0236 0.0295 L1 - 1.000 - - 0.0394 - α 0° - 8° 0° - 8° 1. Values in inches are converted from mm and rounded to four decimal digits. 30/35 DocID4997 Rev 17

M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Part numbering 12 Part numbering Table 22. Ordering information scheme Example: M93C86 – W MN 6 T P Device type M93 = MICROWIRE™ serial EEPROM Device function 86 = 16 Kbit (2048 x 8) 76 = 8 Kbit (1024 x 8) 66 = 4 Kbit (512 x 8) 56 = 2 Kbit (256 x 8) 46 = 1 Kbit (128 x 8) Operating voltage W = V = 2.5 to 5.5 V CC R = V = 1.8 to 5.5 V CC Package BN = PDIP8(1) MN = SO8 (150 mils width)(2) MC = UFDFPN8 2 x 3 mm (MLP8)(2) DW = TSSOP8 (169 mils width)(2) Device grade 6 = Industrial temperature range, –40 to 85 °C. Device tested with standard test flow Packing blank = tube packing T = tape and reel packing Plating technology P or G = ECOPACK2® 1. ECOPACK1®: RoHS-compliant. 2. ECOPACK2®: RoHS compliant and free of brominated, chlorinated and antimony-oxide flame retardants. DocID4997 Rev 17 31/35 34

Part numbering M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Engineering samples Parts marked as “ES”, “E” or accompanied by an Engineering Sample notification letter, are not yet qualified and therefore not yet ready to be used in production and any consequences deriving from such usage will not be at ST charge. In no event, ST will be liable for any customer usage of these engineering samples in production. ST Quality has to be contacted prior to any decision to use these Engineering samples to run qualification activity. For a list of available options (speed, package, etc.) or for further information on any aspect of this device, please contact your nearest ST sales office. 32/35 DocID4997 Rev 17

M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Revision history 13 Revision history Table 23. Document revision history Date Revision Changes Modified footnote in Table 14 and Table 15 on page 23 Updated Figure 14: UFDFPN8 (MLP8) 8-lead ultra thin fine pitch dual 01-Apr-2010 9 flat package no lead 2 x 3 mm, outline and Table 22: UFDFPN8 (MLP8) 8-lead ultra thin fine pitch dual flat package no lead 2 x 3 mm, data Updated Figure 31: Available M93C66-x products (package, voltage 29-Apr-2010 10 range, temperature grade) UFDFPN option. Updated Table 7: Absolute maximum ratings, MLP8 package data in Section 12: Package mechanical data and process data in Section 9: Clock pulse counter. Deleted Table 29: Available M93C46-x products (package, voltage range, temperature grade), Table 30: Available M93C56-x products 12-Apr-2011 11 (package, voltage range, temperature grade), Table 31: Available M93C66-x products (package, voltage range, temperature grade), Table 32: Available M93C76-x products (package, voltage range, temperature grade) and Table 33: Available M93C86-x products (package, voltage range, temperature grade). Updated Table 1: Device summary and Table 8: Operating conditions 05-Oct-2011 12 (M93Cx6). Modified footnote 2 in Table 7. Document reformatted. Updated: – Part number names – Table 1: Device summary and package figure on cover page – Section 1: Description – Introductory paragraph in Section 9: Maximum ratings – Note (2) under Table 7: Absolute maximum ratings – Table 8: Operating conditions (M93Cx6) and Table 8: Operating conditions (M93Cx6-W) – Introductory paragraph in Section 11: Package information – Figure 15: UFDFPN8 8-lead Ultra thin Fine pitch Dual Flat 23-Apr-2013 13 Package No lead 2 x 3 mm, outline and Table 20: UFDFPN8 8-lead Ultra thin Fine pitch Dual Flat Package No lead x 3 mm, data – Table 22: Ordering information scheme Renamed: – Figure 2: 8-pin package connections (top view) – Table 16: AC characteristics (M93Cx6, device grade 6) Deleted: – Section: Common I/O operation – Table: DC characteristics (M93Cx6, device grade 3), Table: DC characteristics (M93Cx6-W, device grade 3), and Table: AC characteristics (M93Cx6-W, device grade 3) DocID4997 Rev 17 33/35 34

Revision history M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x Table 23. Document revision history (continued) Date Revision Changes Updated: – Table 1: Device summary: added “M93C46-R” and “M93C86-R”, deleted M93Cxx part numbers. – Features: Single supply voltage, write cycles and data retention – Section 1: Description – Note (2) under Table 7: Absolute maximum ratings. – Section 10: DC and AC parameters: updated the introduction and deleted tables related to M93Cxx part numbers. – Figure 9: AC testing input output waveforms 26-Oct-2013 14 – Table 14: DC characteristics (M93Cx6-W, device grade 6), Table 15: DC characteristics (M93Cx6-R), Table 16: AC characteristics (M93Cx6-W, M93Cx6-R, device grade 6) and Table 17: AC characteristics (M93Cx6-R). – Table 22: Ordering information scheme. Added: – Figure 4: M93Cx6 ORG input connection – Table 10: Cycling performance and Table 11: Memory cell data retention. 15-Nov-2013 15 Removed Table 14 Cycling performance by byte Updated: – Features – Table 1: Device summary; 06-Nov-2015 16 – Notes of Table 7: Absolute maximum ratings; – Table 22: Ordering information scheme – Table 11: Package information Updated: – Figure 16: UFDFN8 - 8-lead, 2 × 3 mm, 0.5 mm pitch ultra thin 21-Dec-2015 17 profile fine pitch dual flat package outline – Table 20: UFDFN8 - 8-lead, 2 × 3 mm, 0.5 mm pitch ultra thin profile fine pitch dual flat package mechanical data 34/35 DocID4997 Rev 17

M93C86-x M93C76-x M93C66-x M93C56-x M93C46-x IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2015 STMicroelectronics – All rights reserved DocID4997 Rev 17 35/35 35

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: S TMicroelectronics: M93C46-WMN6P M93C66-WMN6P M93C56-WMN6P M93C86-WMN6P M93C46-WDW6TP M93C86-WDW6TP M93C66-WDW6TP M93C46-WMN6TP M93C86-WBN6P M93C46-WBN6P M93C56-WDW6TP M93C56-RDW6TP M93C76-RDW6TP M93C66-RMC6TG M93C56-RMN6P M93C56-RMN6TP M93C56-WMN6TP M93C66-WMN6TP M93C76-WMN6P M93C76-WMN6TP M93C86-WMN6TP