The AT93C46/56/66 is a three-wire serial EEPROM that provides 1024/2048/4096 bits of storage space and can operate in low-voltage and low-power environments.
The AT93C46/56/66 family are low‑voltage, 3‑wire serial EEPROMs offering 1 K, 2 K, and 4 K memory densities in 8‑lead PDIP, SOIC, and TSSOP packages. They support multiple supply voltages (1.8 V to 5.5 V) and provide high reliability with up to 1 million write cycles and 100‑year data retention.
The datasheet details electrical characteristics, absolute maximum ratings, pin configurations, instruction set, timing diagrams, and packaging dimensions. It also includes information on endurance, write cycle time, and recommended operating conditions for automotive‑grade and extended‑temperature devices.
| Supply Voltage Range | 1.8 V to 5.5 V (various versions) |
|---|---|
| Clock Rate | 2 MHz (5 V) |
| Endurance | 1 Million Write Cycles |
| Data Retention | 100 Years |
| Package Types | 8‑lead PDIP, 8‑lead JEDEC/EIAJ SOIC, 8‑lead TSSOP |
The AT93C46 is available in versions that operate from 1.8 V up to 5.5 V.
The devices are rated for up to 1 million write cycles.
They support a 2 MHz serial clock when powered at 5 V.
They are offered in 8‑lead PDIP, 8‑lead JEDEC/EIAJ SOIC, and 8‑lead TSSOP packages.