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CAT93C57
2-kb Microwire Serial EEPROM
CAT93C56, CA T93C57
2-Kb Microwire Serial
CMOS EEPROM
DescriptionThe CAT93C56/57 is a 2−kb CMOS Serial EEPROM device which
is organized as either 128 registers of 16 bits (ORG pin at VCC) or 256
registers of 8 bits (ORG pin at GND). Each register can be written (or
read) serially by using the DI (or DO) pin. The CAT93C56/57 features
sequential read and self−timed internal write with auto−clear. On−chip
Power−On Reset circuitry protects the internal logic against powering
up in the wrong state.
Features High Speed Operation: 2 MHz 1.8 V to 5.5 V Supply Voltage Range Selectable x8 or x16 Memory Organization Sequential Read Software Write Protection Power−up Inadvertant Write Protection Low Power CMOS Technology 1,000,000 Program/Erase Cycles 100 Year Data Retention Industrial and Extended Temperature Ranges 8−pin PDIP, SOIC, TSSOP and 8−pad TDFN Packages These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
ORG
CAT93C57GND
VCC
CAT93C56
Figure 1. Functional SymbolNOTE: When the ORG pin is connected to VCC, the x16 organization is selected.When it is connected to ground, the x8 pin is selected. If the ORG pin is leftunconnected, then an internal pullup device will select the x16 organization.
