The 93LC46B-E/SN is a 1-Kbit Serial Electrically Erasable Programmable Read-Only Memory (EEPROM) from Microchip. This device is suitable for use in applications requiring both permanent and changeable memory storage. It features a serial I2C bus interface, a 400kHz clock rate, a 32-byte page write, low current operation, hardware write protection and a wide operational voltage range from 2.5V to 5.5V. It also operates over the military temperature range from -55°C to +125°C. This device is available in 8-pin PDIP, SOIC and TSSOP packages.