The AT25080A/160A/320A/640A is an 8192/16384/32768/65536-bit serial electrically erasable programmable read-only memory (EEPROM) with 32-byte page mode, optional SPI modes 0 and 3, medium-voltage and standard-voltage operation, high reliability, self-timed write cycle, 1/4, 1/2 or entire array block write protection, hardware and software data protection write protect (WP) pin and write disable instructions
The AT25080A, AT25160A, AT25320A, and AT25640A are serial electrically‑erasable programmable read‑only memory (EEPROM) devices offered in 8‑lead SOIC and TSSOP packages. They provide 8‑bit words organized as 8 K‑64 K bits, support SPI modes 0 and 3, and include block write protection and a HOLD pin for pausing communication.
The datasheet details pin configurations, absolute maximum ratings, DC and AC electrical characteristics, timing parameters, and instruction set definitions. It also includes mechanical dimensions for the TSSOP package and a revision history.
| Operating temperature | -40 °C to +125 °C |
|---|---|
| Maximum clock rate | 5 MHz |
| Endurance (write cycles) | 1 million cycles |
The EEPROM can endure up to one million write cycles.