25LC640A in 25LCxx / AT25 SPI EEPROM Family
The 25LC640A is a 64-Kbit serial Electrically Erasable Programmable Read-Only Memory (EEPROM) family manufactured by Microchip Technology. Utilizing a Serial Peripheral Interface (SPI) bus, these devices provide high-speed non-volatile storage with byte-level flexibility and low power consumption. They are designed for industrial and commercial systems requiring compact, cost-effective data logging or configuration storage where the extreme write cycle endurance of FRAM is not strictly necessary but reliable SPI communication is essential.
Variants in This Sub-Family
| Part Number | Difference | Stock |
|---|---|---|
| 25LC640A-I/SN (Microchip Technology) | SOIC-8 | 10,822 |
Variants within the 25LC640A family are primarily distinguished by their packaging options and operating temperature ranges. Common packages include 8-lead PDIP, SOIC, MSOP, and TSSOP, as well as space-saving DFN and TDFN formats. Temperature grades range from standard industrial (-40°C to +85°C) to extended automotive grades (-40°C to +125°C). Voltage variations like the 25AA640A exist specifically for lower-voltage 1.8V operation.
