.The Microchip 93C66B-I/P is a 256x16bit Serial Electrically Erasable Programmable Read-Only Memory (EEPROM) with Microwire interface in a 8-Pin Dual Inline Package (DIP). It operates on a voltage range of 4.5V to 5.5V and a clock frequency of 2 MHz. It is capable of data storage up to 4096 bits and data write times of 1ms. It is commonly used in various types of consumer electronic products for storing persistant data and settings. The 93C66B-IP is ideal for applications such as delivering firmware updates and configuration file storage, and is reliable and easy to use.