SA25C020 is a 2Mb (512K x 4) CMOS non-volatile serial EEPROM, fully complies with the SPI 4-wire protocol, is enabled through the Chip Select (CSb) pin, and uses Clock (SCK), Data-in (SI) and Data-out (SO) pins to synchronously control data transfer between the SPI microcontroller and EEPROM.
The SA25C020 is a 2 Mb (512 K × 4) CMOS serial EEPROM that conforms to the SPI 4‑wire protocol. It supports SPI modes 0 and 3, offers block write protection, and operates from a single 2.7 V‑3.6 V supply.
The datasheet provides detailed electrical characteristics, temperature ranges, pin definitions, ordering information, and life‑support policy, making it a reference for designers integrating the device into low‑power, high‑endurance applications.
| Memory capacity | 2 Mb (512 K × 4) |
|---|---|
| Page organization | 1024 pages (256 Bytes per page) |
| Supply voltage | 2.7 V to 3.6 V |
| Clock rate | 25 MHz |
| Industrial temperature range | -40 °C to +85 °C |
| Erase cycles (minimum) | 100,000 |
| Data retention | More than 20 years |
| Standby current | < 1.1 µA |
The device operates from a single supply voltage of 2.7 V to 3.6 V.
It is rated for –40 °C to +85 °C in industrial applications and 0 °C to +70 °C for commercial use.
The datasheet specifies a minimum of 100,000 erase cycles.
It provides 2 Mb of storage organized as 1024 pages of 256 bytes each.