| Manufacturer | Part Number | Description |
|---|---|---|
Seiko Instruments |
S-25C640A | SPI SERIAL E2PROM |
ABLIC |
S-25C640A | SPI SERIAL E2PROM |
MicrochipTechnology |
25C640 | 64K SPI Bus Serial EEPROM |
ABLIC |
S-25C640AxxH | SPI SERIAL E2PROM |
| FM25C640U | 64K-Bit SPI Interface Serial CMOS EEPROM | |
Fairchild (now onsemi) |
NM25C640 | 64K-Bit Serial CMOS EEPROM (Serial Peripheral Interface (SPI) Synchronous Bus) |