The Microchip 25LC640A is a 64 Kbit Serial EEPROM that operates at a voltage range of 2.5V to 5.5V and utilizes a Serial Peripheral Interface (SPI) for communication. It features a memory organization of 8192 x 8 bits and supports a maximum clock frequency of 10 MHz. The device is designed for low power consumption, with a maximum read and write current of 5 mA at 5.5V and a standby current of 1 ¬µA. The 25LC640A includes self-timed erase and write cycles with a maximum duration of 5 ms, and it offers block write protection options, allowing users to protect portions of the memory array. The EEPROM is rated for over 1 million erase/write cycles and has a data retention capability exceeding 200 years. It is available in various package types, including 8-lead PDIP, SOIC, MSOP, TSSOP, and TDFN, and is qualified for automotive applications under AEC-Q100 standards. The device operates within industrial temperature ranges of -40¬8C to +85¬8C and extended ranges up to +125¬8C.
The Microchip 25LC640A is a 64 Kb Serial EEPROM utilizing the industry standard Serial Peripheral Interface (SPI) compatible serial bus. The device 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 memory storage 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, 25AA640A
Additional Features
| Microchip Technology, Inc. | |
|---|---|
| Product Category | Memory Chips |
| Product Number | 25LC640A |
| Product Name | 64Kb 2.5V SPI Serial EEPROM |
| Memory Category | EEPROM |
| Data Rate | 10 MHz |
| Endurance | 1000000 Write/Erase Cycles |
| Operating Temperature | -40 to 150 C (-40 to 302 F) |
