25AA320/25LC320/25C320 are 32 Kbit serial Electrically Erasable PROMs.
The document describes the 32‑Kbit serial EEPROM family (25AA320, 25LC320, 25C320) that use a standard SPI interface. It lists the available package types (8‑pin PDIP, SOIC and TSSOP), the supported voltage ranges, clock frequencies, and temperature grades for industrial and automotive applications. Functional operation, instruction set, and timing diagrams for read, write, and status‑register commands are also included.
Electrical characteristics such as write current, read current, standby current, endurance, and data‑retention are detailed, along with absolute maximum ratings and pin‑function definitions. The selection table helps designers choose the appropriate device variant based on voltage, speed, and temperature requirements.
| Memory organization | 4096 × 8 bit |
|---|---|
| Write current (max) | 3 mA |
| Read current (typical) | 500 µA |
| Standby current (typical) | 500 nA |
| Endurance | 1 M E/W cycles |
| Data retention | > 200 years |
| VCC range (25AA320) | 1.8 V – 5.5 V |
| Industrial temperature range | -40 °C to +85 °C |
| Package options | 8‑pin PDIP, SOIC, TSSOP |
The maximum write current is 3 mA.
Standby current is typically 500 nA.
The industrial version operates from –40 °C to +85 °C.
Up to 32 bytes can be written per page.