25AA640T-I/SN [Microchip]

The 25AA640/25LC640 is a 64 Kbit serial EEPROM organized as 8192 x 8 bits. It features SPI-compatible serial bus communication with clock (SCK), data in (SI), data out (SO), and chip select (CS) signals. Low-power CMOS technology provides typical write current of 3mA, read current of 500μA, and standby current of 500nA. The device includes 32-byte page write capability, 5ms max write cycle time, self-timed erase/write cycles, block write protection (none, 1/4, 1/2, or full array), and built-in write protection including power-on/off data protection and write-protect pin. High reliability features include >200 years data retention and >4000V ESD protection. Available in 8-pin PDIP, SOIC, and TSSOP packages with industrial (-40°C to +85°C) and automotive (-40°C to +125°C) temperature ranges.