25CS640T-E/ST [Microchip]

The 25CS640 is a 64 Kbit (8 Kbytes) Serial EEPROM utilizing the industry standard Serial Peripheral Interface (SPI) compatible serial bus. 

Microchip's 25CS SPI Serial EEPROM Family offers additional features such as Built-in Error Correction Code (ECC) logic, Undervoltage Lockout (UVLO) detection, 128-bit Serial Number and Enhanced Write Protection to optimized for use in consumer electronics, industrial, medical, and automotive applications where reliable and dependable nonvolatile memory storage is essential. The EEPROM is available in a variety of space-saving packaging options.

8192 x 8-bit (64 Kbit)

Serial Peripheral Interface (SPI) Compatible
• 1.7V to 5.5V operation up to 20 MHz clock frequency

Build-in Error Correction Code (ECC) Logic
• ECC Status bit via Status Register

User configurable Undervoltage Lockout (UVLO) Detection

Security Register
• Pre-programmed 128-bit serial number
• 32-byte user-programmable lockable ID page

Write Protection Modes:
• Legacy Write Protection Mode: Protect 1/4, 1/2 or Entire Array
• Enhanced Write Protection Mode: User-definable memory partitions and protection behavior

Reliability
• More than 1 million erase/write cycles
• Data retention > 200 years

Automotive AECQ-100 Qualified

Temperature Ranges Available
• Industrial (I): -40°C to 85°C
• Extended (E): -40°C to +125°C
• Extended (H): -40°C to +150°C

Available in standard packages including 8-lead SOIC, 8-lead MSOP, 8-lead TSSOP and 8-lead 2x3 TDFN

Factory Programming Available