The Microchip 25AA640A-I/ST is a 64 Kb Serial EEPROM utilizing theindustry standard Serial Peripheral Interface (SPI) compatible serial bus. Thedevice is organized as one block of 8192 x 8-bit and is optimized for use in consumer electronics, industrial, medical,and automotive applications where reliable and dependable nonvolatile memorystorage is essential. Software write protection allows the user to protect ¼,½, or the entire memory array. A hardware write protect pin is also provided,which additionally protects against inadvertent writes to the status register.The EEPROM is available in a variety of space-saving packaging options.
For product comparison, please consider:AT25640B,25LC640A
Feature
- 8192 x 8-bit (64 Kbit)
- Serial Peripheral Interface (SPI) Compatible
- Supports SPI modes 0 and 3
- Up to 10 MHz clock frequency
- Self-Timed Erase and Write Cycles (5 ms max.)
- Low Power Consumption
- Read current: 5 mA (Max) at 10 MHz
- Write current: 5 mA (Max) at 10 MHz
- Standby current: 1 μA (Max) at 5.5 V
- Block Write Protection: Protect 1/4, 1/2 or Entire Array
- More than 1 million erase/write cycles
- Data retention > 200 years
- Temperature Ranges Available
- Industrial (I): -40°C to 85°C
- Extended (E): -40°C to +125°C
- Automotive AECQ-100 Qualified1
- Factory Programming Available
- Available in standard packages including 8-lead PDIP and SOIC, and advanced packages including 8-lead MSOP, 8-lead TSSOP and 8-lead 2x3 TDFN
