Atmel 93c66 3-wire Serial EEPROM Memory 8pin DIP 2.7V to 5.5V 93c66PC AT93c66

Description

Atmel 93c66  3-wire Serial EEPROM Memory 8pin DIP 2.7V to 5.5V 93c66PC AT93c66
The AT93C46/56/66 provides 1024/2048/4096 bits of serial electrically erasable programmable read-only memory (EEPROM), organized as 64/128/256 words of 16 bits each (when the ORG pin is connected to VCC), and 128/256/512 words of 8 bits each (when the ORG pin is tied to ground). The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operations are essential.
The AT93C46/56/66 is enabled through the Chip Select pin (CS) and accessed via a three-wire serial interface consisting of Data Input (DI), Data Output (DO), and Shift Clock (SK). Upon receiving a Read instruction at DI, the address is decoded and the data is clocked out serially on the DO pin. The Write cycle is completely self-timed, and no separate Erase cycle is required before Write. The Write cycle is only enabled when the part is in the Erase/Write Enable state. When CS is brought high following the initiation of a Write cycle, the DO pin outputs the Ready/Busy status of the part.
SPECIFICATIONS
Operating Voltage
– 2.7 (VCC = 2.7V to 5.5V)
User-selectable Internal Organization
– 4K: 512 x 8 or 256 x 16
Three-wire Serial Interface
2 MHz Clock Rate (5V)
Self-timed Write Cycle (10 ms max)
High Reliability
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
Automotive Grade
8-lead PDIP
Absolute Maximum Ratings*
Operating Temperature: −55°C to +125°C
Storage Temperature: −65°C to +150°C
Voltage on Any Pin with Respect to Ground: −1.0V to +7.0V
Maximum Operating Voltage: 6.25V
DC Output Current: 5.0 mA
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