The AT93C46A is a 1K bit serial electrically-erasable programmable read-only memory (EEPROM) optimized for use in many automotive applications where low-power and low-voltage operation are essential.
The AT93C46A is a 1 Kbit (1024‑bit) serial EEPROM optimized for low‑voltage automotive applications. It operates from 2.7 V to 5.5 V, supports a 2 MHz three‑wire serial interface, and offers up to 1 million write cycles with 100‑year data retention.
The device is offered in 8‑lead JEDEC SOIC and 8‑lead TSSOP packages. The datasheet includes absolute maximum ratings, DC and AC characteristics, instruction set details, timing diagrams, and mechanical dimensions for board layout.
| Supply Voltage | 2.7 V – 5.5 V |
|---|---|
| Operating Temperature | -55 °C – +125 °C |
| Endurance | 1 Million write cycles |
| Data Retention | 100 years |
| Clock Rate | up to 2 MHz |
| Package Types | 8‑lead SOIC and 8‑lead TSSOP |
The device operates from 2.7 V to 5.5 V.
It is available in 8‑lead JEDEC SOIC and 8‑lead TSSOP packages.