AT25512 is a serial electrically-erasable programmable read only memory (EEPROM) of 524,288 bits organized as 65,536 words of 8 bits each. The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operation are essential. The device is available in space saving 8-lead JEDEC SOIC, 8-lead TSSOP and 8-lead SAP packages. In addition, the entire family is available in 1.8V (1.8V to 5.5V) versions. AT25512 is enabled through the Chip Select pin (CS) and accessed via a 3-wire interface consisting of Serial Data Input (SI), Serial Data Output (SO) and Clock signal (SCK).
The AT25512 is a 512‑Kbit serial EEPROM offering 1.8 V to 5.5 V low‑voltage operation and a 20 MHz SPI clock rate. It is available in 8‑lead SOIC, TSSOP and SAP packages and supports 128‑byte page mode as well as byte‑write operations.
The document provides pin configurations, absolute maximum ratings, DC and AC electrical characteristics, instruction set details, and protection features such as block write protection and a write‑protect pin. Revision history and mechanical drawing data are also included.
| Supply Voltage | 1.8 V to 5.5 V |
|---|---|
| Maximum Clock Rate | 20 MHz |
| Page Mode Size | 128 bytes |
| Endurance | 1 Million Write Cycles |
| Data Retention | >40 Years |
| Write Cycle Time | 5 ms (max) |
The device operates from 1.8 V up to 5.5 V.
The AT25512 supports a maximum clock rate of 20 MHz.
It is rated for up to 1 million write cycles.
Data is retained for more than 40 years.