CAT93C76 8-Kb Microwire Serial EEPROM Description The CAT93C76 is an 8−Kb Serial EEPROM memory device which is configured as either registers of 16 bits (ORG pin at VCC or Not Connected) or 8 bits (ORG pin at GND). Each register can be written (or read) serially by using the DI (or DO) pin. The CAT93C76 is manufactured using ON Semiconductor’s advanced CMOS EEPROM floating gate technology. The device is designed to endure 1,000,000 program/erase cycles and has a data retention of 100 years. The device is available in 8−pin PDIP, SOIC, TSSOP and 8−pad TDFN packages. http://onsemi.com SOIC−8 V SUFFIX CASE 751BD TDFN−8 ZD4 SUFFIX CASE 511AL PDIP−8 L SUFFIX CASE 646AA TSSOP−8 Y SUFFIX CASE 948AL Features • • • • • • • • • • • • • High Speed Operation: 3 MHz @ VCC ≥ 2.5 V Low Power CMOS Technology 1.8 to 5.5 Volt Operation Selectable x8 or x16 Memory Organization Self−timed Write Cycle with Auto−clear Software Write Protection Power−up Inadvertant Write Protection 1,000,000 Program/Erase Cycles 100 Year Data Retention Industrial and Extended Temperature Ranges Sequential Read “Green” Package Option Available This Device is Pb−Free, Halogen Free/BFR Free and RoHS Compliant PIN CONFIGURATION CS SK DI DO 1 VCC NC ORG GND PDIP (L), SOIC (V), TSSOP (Y), TDFN (ZD4) PIN FUNCTION Pin Name VCC Function CS Chip Select SK Serial Clock Input DI Serial Data Input DO Serial Data Output VCC Power Supply GND Ground GND ORG Memory Organization Figure 1. Functional Symbol NC ORG DI CS DO SK NOTE: When the ORG pin is connected to VCC, the x16 organization is selected. When it is connected to ground, the x8 organization is selected. If the ORG pin is left unconnected, then an internal pull−up device will select the x16 organization. © Semiconductor Components Industries, LLC, 2009 August, 2009 − Rev. 3 1 No Connection ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 12 of this data sheet. Publication Order Number: CAT93C76/D CAT93C76 Table 1. ABSOLUTE MAXIMUM RATINGS Parameters Ratings Units Temperature Under Bias −55 to +125 °C Storage Temperature −65 to +150 °C −2.0 to +VCC +2.0 V Voltage on any Pin with Respect to Ground (Note 1) VCC with Respect to Ground −2.0 to +7.0 V Lead Soldering Temperature (10 seconds) 300 °C Output Short Circuit Current (Note 2) 100 mA Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 1. The minimum DC input voltage is −0.5 V. During transitions, inputs may undershoot to −2.0 V for periods of less than 20 ns. Maximum DC voltage on output pins is VCC +0.5 V, which may overshoot to VCC +2.0 V for periods of less than 20 ns. 2. Output shorted for no more than one second. Table 2. RELIABILITY CHARACTERISTICS (Note 2) Reference Test Method Min Units Endurance MIL−STD−883, Test Method 1033 1,000,000 Cycles / Byte TDR (Note 3) Data Retention MIL−STD−883, Test Method 1008 100 Years VZAP (Note 3) ESD Susceptibility MIL−STD−883, Test Method 3015 2,000 V JEDEC Standard 17 100 mA Symbol NEND (Note 3) ILTH (Notes 3, 4) Parameter Latch−Up 3. These parameters are tested initially and after a design or process change that affects the parameter. 4. Latch−up protection is provided for stresses up to 100 mA on I/O pins from −1 V to VCC + 1 V. Table 3. D.C. OPERATING CHARACTERISTICS (VCC = +1.8 V to +5.5 V unless otherwise specified.) Symbol Parameter Test Conditions ICC1 Power Supply Current (Write) fSK = 1 MHz, VCC = 5.0 V ICC2 Power Supply Current (Read) fSK = 1 MHz, VCC = 5.0 V ISB1 Power Supply Current (Standby) (x8 Mode) CS = 0 V, ORG = GND ISB2 Power Supply Current (Standby) (x16 Mode) ILI Input Leakage Current ILO ILORG Min Typ Max Units 1 3 mA 300 500 mA 2 10 mA CS = 0 V, ORG = Float or VCC 0 (Note 5) 10 mA VIN = 0 V to VCC 0 (Note 5) 10 mA Output Leakage Current VOUT = 0 V to VCC, CS = 0 V 0 (Note 5) 10 mA ORG Pin Leakage Current ORG = GND or ORG = VCC 1 10 mA VIL1 Input Low Voltage 4.5 V v VCC v 5.5 V −0.1 0.8 V VIH1 Input High Voltage 4.5 V v VCC v 5.5 V 2 VCC + 1 V VIL2 Input Low Voltage 1.8 V v VCC < 4.5 V 0 VCC x 0.2 V VIH2 Input High Voltage 1.8 V v VCC < 4.5 V VCC x 0.7 VCC + 1 V 0.4 V VOL1 Output Low Voltage 4.5 V v VCC v 5.5 V, IOL = 2.1 mA VOH1 Output High Voltage 4.5 V v VCC v 5.5 V, IOH = −400 mA VOL2 Output Low Voltage 1.8 V v VCC < 4.5 V, IOL = 100 mA VOH2 Output High Voltage 1.8 V v VCC < 4.5 V, IOH = −100 mA 2.4 V 0.1 VCC − 0.2 V V 5. 0 mA is defined as less than 900 nA. Table 4. PIN CAPACITANCE (Note 3) Symbol COUT CIN Test Conditions Output Capacitance (DO) Input Capacitance (CS, SK, DI, ORG) Max Units VOUT = 0 V 5 pF VIN = 0 V 5 pF http://onsemi.com 2 Min Typ CAT93C76 Table 5. INSTRUCTION SET (Note 6) Address Data Instruction Start Bit Opcode x8 x16 READ 1 10 A10−A0 A9−A0 Read Address AN– A0 ERASE 1 11 A10−A0 A9−A0 Clear Address AN– A0 WRITE 1 01 A10−A0 A9−A0 EWEN 1 00 11XXXXXXXXX 11XXXXXXXX Write Enable EWDS 1 00 00XXXXXXXXX 00XXXXXXXX Write Disable ERAL 1 00 10XXXXXXXXX 10XXXXXXXX Clear All Addresses WRAL 1 00 01XXXXXXXXX 01XXXXXXXX x8 x16 D7−D0 Comments D15−D0 D7−D0 Write Address AN– A0 D15−D0 Write All Addresses 6. Address bit A10 for the 1,024x8 org. and A9 for the 512x16 org. are “don’t care” bits, but must be kept at either a “1” or “0” for READ, WRITE and ERASE commands. Table 6. A.C. CHARACTERISTICS Limits VCC = 1.8 V − 2.5 V Symbol Parameter Test Conditions Min tCSS CS Setup Time tCSH CS Hold Time tDIS DI Setup Time tDIH DI Hold Time 100 tPD1 Output Delay to 1 tPD0 Output Delay to 0 tHZ (Note 8) tEW VCC = 2.5 V − 5.5 V Max 100 Min Max Units 50 ns 0 0 ns 100 50 ns 50 ns CL = 100 pF (Note 7) Output Delay to High−Z 250 150 ns 250 150 ns 150 100 ns 5 5 ms Program/Erase Pulse Width tCSMIN Minimum CS Low Time 200 150 ns tSKHI Minimum SK High Time 250 150 ns tSKLOW Minimum SK Low Time 250 150 ns tSV Output Delay to Status Valid SKMAX Maximum Clock Frequency 250 DC 1000 DC 100 ns 3000 kHz 7. The input levels and timing reference points are shown in the “AC Test Conditions” table. 8. These parameters are tested initially and after a design or process change that affects the parameter. Table 7. POWER−UP TIMING (Notes 8, 9) Parameter Symbol Max Units tPUR Power−up to Read Operation 1 ms tPUW Power−up to Write Operation 1 ms 9. tPUR and tPUW are the delays required from the time VCC is stable until the specified operation can be initiated. Table 8. A.C. TEST CONDITIONS Input Rise and Fall Times ≤ 50 ns Input Pulse Voltages 0.4 V to 2.4 V 4.5 V v VCC v 5.5 V Timing Reference Voltages 0.8 V, 2.0 V 4.5 V v VCC v 5.5 V Input Pulse Voltages 0.2 VCC to 0.7 VCC 1.8 V v VCC v 4.5 V Timing Reference Voltages 0.5 VCC 1.8 V v VCC v 4.5 V http://onsemi.com 3 CAT93C76 Device Operation The CAT93C76 is a 8192−bit nonvolatile memory intended for use with industry standard microprocessors. The CAT93C76 can be organized as either registers of 16 bits or 8 bits. When organized as X16, seven 13−bit instructions control the read, write and erase operations of the device. When organized as X8, seven 14−bit instructions control the read, write and erase operations of the device. The CAT93C76 operates on a single power supply and will generate on chip, the high voltage required during any write operation. Instructions, addresses, and write data are clocked into the DI pin on the rising edge of the clock (SK). The DO pin is normally in a high impedance state except when reading data from the device, or when checking the ready/busy status after a write operation. The ready/busy status can be determined after the start of a write operation by selecting the device (CS high) and polling the DO pin; DO low indicates that the write operation is not completed, while DO high indicates that the device is ready for the next instruction. If necessary, the DO pin may be placed back into a high impedance state during chip select by shifting a dummy “1” into the DI pin. The DO pin will enter the high impedance state on the falling edge of the clock (SK). Placing the DO pin into the high impedance state is recommended in applications where the DI pin and the DO pin are to be tied together to form a common DI/O pin. The format for all instructions sent to the device is a logical “1” start bit, a 2−bit (or 4−bit) opcode, 10−bit address (an additional bit when organized X8) and for write operations a 16−bit data field (8−bit for X8 organizations). The most significant bit of the address is “don’t care” but it must be present. tSKHI Read Upon receiving a READ command and an address (clocked into the DI pin), the DO pin of the CAT93C76 will come out of the high impedance state and, after sending an initial dummy zero bit, will begin shifting out the data addressed (MSB first). The output data bits will toggle on the rising edge of the SK clock and are stable after the specified time delay (tPD0 or tPD1). For the CAT93C76, after the initial data word has been shifted out and CS remains asserted with the SK clock continuing to toggle, the device will automatically increment to the next address and shift out the next data word in a sequential READ mode. As long as CS is continuously asserted and SK continues to toggle, the device will keep incrementing to the next address automatically until it reaches the end of the address space, then loops back to address 0. In the sequential READ mode, only the initial data word is preceeded by a dummy zero bit. All subsequent data words will follow without a dummy zero bit. Write After receiving a WRITE command, address and the data, the CS (Chip Select) pin must be deselected for a minimum of tCSMIN. The falling edge of CS will start the self clocking clear and data store cycle of the memory location specified in the instruction. The clocking of the SK pin is not necessary after the device has entered the self clocking mode. The ready/busy status of the CAT93C76 can be determined by selecting the device and polling the DO pin. Since this device features Auto−Clear before write, it is NOT necessary to erase a memory location before it is written into. tSKLOW tCSH SK tDIH tDIS VALID VALID DI tCSS CS tDIS tPD0, tPD1 DO DATA VALID Figure 2. Synchronous Data Timing http://onsemi.com 4 tCSMN CAT93C76 SK CS AN DI 1 1 AN−1 Don’t Care A0 0 HIGH−Z DO Dummy 0 D15 . . . D0 or D7 . . . D0 Address + 1 D15 . . . D0 or D7 . . . D0 Address + 2 D15 . . . D0 or D7 . . . D0 Address + n D15 . . . or D7 . . . Figure 3. READ Instruction Timing SK tCSMIN CS STATUS VERIFY AN DI 1 0 AN−1 A0 DN D0 1 tSV DO STANDBY BUSY HIGH−Z READY tEW Figure 4. WRITE Instruction Timing http://onsemi.com 5 tHZ HIGH−Z CAT93C76 Erase determined by selecting the device and polling the DO pin. Once cleared, the contents of all memory bits return to a logical “1” state. Upon receiving an ERASE command and address, the CS (Chip Select) pin must be deasserted for a minimum of tCSMIN. The falling edge of CS will start the self clocking clear cycle of the selected memory location. The clocking of the SK pin is not necessary after the device has entered the self clocking mode. The ready/busy status of the CAT93C76 can be determined by selecting the device and polling the DO pin. Once cleared, the content of a cleared location returns to a logical “1” state. Write All Upon receiving a WRAL command and data, the CS (Chip Select) pin must be deselected for a minimum of tCSMIN. The falling edge of CS will start the self clocking data write to all memory locations in the device. The clocking of the SK pin is not necessary after the device has entered the self clocking mode. The ready/busy status of the CAT93C76 can be determined by selecting the device and polling the DO pin. It is not necessary for all memory locations to be cleared before the WRAL command is executed. Note 1: After the last data bit has been sampled, Chip Select (CS) must be brought Low before the next rising edge of the clock (SK) in order to start the self-timed high voltage cycle. This is important because if CS is brought low before or after this specific frame window, the addressed location will not be programmed or erased. Erase/Write Enable and Disable The CAT93C76 powers up in the write disable state. Any writing after power-up or after an EWDS (write disable) instruction must first be preceded by the EWEN (write enable) instruction. Once the write instruction is enabled, it will remain enabled until power to the device is removed, or the EWDS instruction is sent. The EWDS instruction can be used to disable all CAT93C76 write and clear instructions, and will prevent any accidental writing or clearing of the device. Data can be read normally from the device regardless of the write enable/disable status. Power-On Reset (POR) Erase All The CAT93C76 incorporates Power-On Reset (POR) circuitry which protects the device against malfunctioning while VCC is lower than the recommended operating voltage. The device will power up into a read-only state and will power-down into a reset state when VCC crosses the POR level of ~1.3 V. Upon receiving an ERAL command, the CS (Chip Select) pin must be deselected for a minimum of tCSMIN. The falling edge of CS will start the self clocking clear cycle of all memory locations in the device. The clocking of the SK pin is not necessary after the device has entered the self clocking mode. The ready/busy status of the CAT93C76 can be SK CS STATUS VERIFY AN DI 1 1 AN−1 tCS A0 1 tSV DO STANDBY HIGH−Z tHZ BUSY tEW Figure 5. ERASE Instruction Timing http://onsemi.com 6 READY HIGH−Z CAT93C76 SK STANDBY CS DI 1 0 0 * * ENABLE = 11 DISABLE = 00 Figure 6. EWEN/EWDS Instruction Timing SK CS STATUS VERIFY STANDBY tCS DI 1 0 1 0 0 tSV tHZ HIGH−Z DO BUSY READY HIGH−Z tEW Figure 7. ERAL Instruction Timing SK CS STATUS VERIFY STANDBY tCSMIN DI 1 0 0 0 1 DN D0 tSV tHZ BUSY DO tEW Figure 8. WRAL Instruction Timing http://onsemi.com 7 READY HIGH−Z CAT93C76 PACKAGE DIMENSIONS PDIP−8, 300 mils CASE 646AA−01 ISSUE A SYMBOL MIN NOM A E1 5.33 A1 0.38 A2 2.92 3.30 4.95 b 0.36 0.46 0.56 b2 1.14 1.52 1.78 c 0.20 0.25 0.36 D 9.02 9.27 10.16 E 7.62 7.87 8.25 E1 6.10 6.35 7.11 e PIN # 1 IDENTIFICATION MAX 2.54 BSC eB 7.87 L 2.92 10.92 3.30 3.80 D TOP VIEW E A2 A A1 c b2 L e eB b SIDE VIEW END VIEW Notes: (1) All dimensions are in millimeters. (2) Complies with JEDEC MS-001. http://onsemi.com 8 CAT93C76 PACKAGE DIMENSIONS SOIC 8, 150 mils CASE 751BD−01 ISSUE O E1 E SYMBOL MIN A 1.35 1.75 A1 0.10 0.25 b 0.33 0.51 c 0.19 0.25 D 4.80 5.00 E 5.80 6.20 E1 3.80 MAX 4.00 1.27 BSC e PIN # 1 IDENTIFICATION NOM h 0.25 0.50 L 0.40 1.27 θ 0º 8º TOP VIEW D h A1 θ A c e b L SIDE VIEW END VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MS-012. http://onsemi.com 9 CAT93C76 PACKAGE DIMENSIONS TSSOP8, 4.4x3 CASE 948AL−01 ISSUE O b SYMBOL MIN NOM A E1 E MAX 1.20 A1 0.05 A2 0.80 b 0.19 0.15 0.90 1.05 0.30 c 0.09 D 2.90 3.00 3.10 E 6.30 6.40 6.50 E1 4.30 4.40 4.50 e 0.20 0.65 BSC L 1.00 REF L1 0.50 θ 0º 0.60 0.75 8º e TOP VIEW D A2 c q1 A A1 L1 SIDE VIEW L END VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-153. http://onsemi.com 10 CAT93C76 PACKAGE DIMENSIONS TDFN8, 3x3 CASE 511AL−01 ISSUE A D A e b L E E2 PIN#1 ID PIN#1 INDEX AREA A1 SIDE VIEW TOP VIEW SYMBOL MIN NOM MAX A 0.70 0.75 0.80 A1 0.00 0.02 0.05 A3 BOTTOM VIEW 0.20 REF b 0.23 0.30 0.37 D 2.90 3.00 3.10 D2 2.20 −−− 2.50 E 2.90 3.00 3.10 E2 1.40 −−− 1.80 e L D2 A A3 A1 0.65 TYP 0.20 0.30 0.40 Notes: (1) All dimensions are in millimeters. (2) Complies with JEDEC MO-229. http://onsemi.com 11 FRONT VIEW CAT93C76 Example of Ordering Information Prefix Device # Suffix CAT 93C76 V I −G Temperature Range Company ID Product Number 93C76 I = Industrial (−40°C to +85°C) E = Extended (−40°C to +125°C) Lead Finish G: NiPdAu Blank: Matte−Tin T3 Tape & Reel (Note 14) T: Tape & Reel 2: 2,000 Units / Reel (Note 15) 3: 3,000 Units / Reel Package L: PDIP V: SOIC, JEDEC Y: TSSOP ZD4: TDFN (3 x 3 mm) 10. All packages are RoHS−compliant (Lead−free, Halogen−free). 11. The standard lead finish is NiPdAu. 12. The device used in the above example is a CAT93C76VI−GT3 (SOIC, Industrial Temperature, NiPdAu, Tape & Reel, 3,000 / Reel). 13. Product die revision letter is marked on top of the package as a suffix to the production date code (e.g., AYWWA). For additional information, please contact your ON Semiconductor sales office. 14. For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. 15. For TDFN 3 x 3 mm package Tape and Reel = 2,000 / Reel, all others = 3,000 / Reel. 16. For additional package and temperature options, please contact your nearest ON Semiconductor sales office. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. 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