AT93C46/56/57/66 3-Wire Serial CMOS E2PROMs 1K (128 x 8 or 64 x 16) 2K (256 x 8 or 128 x 16) 4K (512 x 8 or 256 x 16) features low voltage and standard voltage operation, user selectable internal organization, 3-wire serial interface, 2 MHz clock rate (5V) compatibility, self-timed write cycle (10 ms max), high reliability endurance: 1 million cycles data retention: 100 years, automotive grade and extended temperature devices available, 8-pin PDIP, JEDEC SOIC, and EIAJ SOIC packages.
This document provides technical specifications for the Atmel AT93C46/56/57/66 family of 1K, 2K, and 4K bit serial electrically erasable programmable read-only memory (EEPROM) devices. The chips are organized as 64/128/256 words of 16 bits or 128/256/512 words of 8 bits, selectable via the ORG pin.
| Memory Capacity | 1024/2048/4096 bits |
|---|---|
| Endurance | 1 Million Cycles |
| Data Retention | 100 Years |
| Clock Rate (5V) | 2 MHz |
| Operating Temperature | -40°C to +85°C |
| Max Operating Voltage | 6.25V |
The devices are available in 4.5V to 5.5V, 2.7V to 5.5V, 2.5V to 5.5V, and 1.8V to 5.5V versions.
The self-timed write cycle has a maximum duration of 10 ms.