1Features• Serial Peripheral Interface (SPI) Compatible• Supports SPI Modes 0 (0,0) and 3 (1,1)• Low Voltage and Standard Voltage Operation– 5.0 (VCC = 4.5V to 5.5V)– 2.7 (VCC = 2.7V to 5.5V)– 1.8 (VCC = 1.8V to 3.6V)• 2.1 MHz Clock Rate• 32-Byte Page Mode• Block Write Protection– Protect 1/4, 1/2, or Entire Array• Write Protect (WP) Pin and Write Disable Instructions for Both Hardware and Software Data Protection• Self-Timed Write Cycle (5 ms Typical)• High Reliability– Endurance: 1 Million Write Cycles– Data Retention: 100 Years– ESD Protection: >4000V• Automotive Grade and Extended Temperature Devices Available• 8-Pin PDIP, JEDEC SOIC, and 14-Pin and 20-Pin TSSOP PackagesDescriptionThe AT25080/160/320/640 provides 8192/16384/32768/65536 bits of serial electri-cally erasable programmable read only memory (EEPROM) organized as1024/2048/4096/8192 words of 8 bits each. The device is optimized for use in manyindustrial and commercial applications where low power and low voltage operationSPI Serial EEPROMs8K (1024 x 8)16K (2048 x 8)32K (4096 x 8)64K (8192 x 8)AT25080AT25160AT25320AT25640Rev. 0675C–08/98(continued)Pin ConfigurationPin NameFunctionCSChip SelectSCKSerial Data ClockSISerial Data InputSOSerial Data OutputGNDGroundVCCPower SupplyWPWrite ProtectHOLDSuspends Serial InputNCNo ConnectDCDon’t Connect8-Pin PDIP12348765CSSOWPGNDVCCHOLDSCKSI8-Pin SOIC12348765CSSOWPGNDVCCHOLDSCKSI14-Lead TSSOP1234567141312111098CSSONCNCNCWPGNDVCCHOLDNCNCNCSCKSI20-Lead TSSOP*1234567891020191817161514131211NCCSSOSONCNCWPGNDDCNCNCVCCHOLDHOLDNCNCSCKSIDCNC*Pins 3, 4 and 17, 18 are internally connected for 14-lead TSSOP socket compatibility.AT25080/160/320/6402are essential. The AT25080/160/320/640 is available inspace saving 8-pin PDIP, JEDEC SOIC, and 14-pin and20-...
