AT24C32D-XHM-B is a 32K 2-Wire Serial EEPROM manufactured by Microchip. It has a 2-Wire interface, meaning communication with a microcontroller can be handled via a single bidirectional data line. This Serial EEPROM has an operating voltage range of 1.7V and it is capable of 1,000,000 write/erase cycles. The device features 32K of memory organized as 4,096 pages of 8 bytes each. The AT24C32D-XHM-B also has a built-in Calibration and Auto Address Increment facility, which allows the user to move through the memory one byte at a time. The device features a 32-byte Page Write buffer and is temperature compensated to ensure consistent performance over a wide operating range.