Microchip AT21CS01-SSHM10-B, 1kbit EEPROM Chip 8-Pin SOIC Serial-1 Wire

The Microchip AT21CS01 is a 1 Kb Serial EEPROM utilizing the Single-Wire bus. Only two pins are needed to access the device: SI/O and GND. The SI/O signal is a combination data and power line, providing power to the device with a parasitic power scheme. The device is organized as one block of 128 x 8 and is optimized for use in consumer and industrial applications where reliable and dependable nonvolatile memory storage is essential. The EEPROM is available in a variety of space-saving packaging options.

128 x 8 (1 Kbit)
Single-Wire Compatible
I²C protocol structure
Communication through a single I/O pin
Standard Speed (15.4 kbps) and High Speed (125 kbps) Modes
Self-Timed Erase and Write Cycles (5 ms max.)
Low Power Consumption
Read current 0.08 mA (Typ), 0.3 mA (Max)
Write current 0.2 mA (Typ), 0.5 mA (Max)
Standby current 0.7 uA (Typ), 2.5 uA (Max)
Software Write Protection
Four independent 256-bit zones
More than 1 million erase/write cycles