The 25C080-I/SN is an 8Kbit Serial Electrically Erasable Programmable Read-Only Memory (EEPROM) from Microchip. This device is organized as 1,048 x 8 bits and is available in SOIC-8 and PDIP-8 packages. it has an access time of 150 nanoseconds. With an operating voltage of 4.5–5.5V and a voltage for write operations of 4.5–5.5V, the 25C080-I/SN utilizes Microwire, SPI and two-wire serial interfaces for communication with a microcontroller. The device is optimized for writes up to one byte or page at a time and features an embedded 4-byte page write buffer. It includes built-in programming and hardware data protection, and features ±20mA write protection which enhances system reliability and data safety. This device is suitable for applications such as system parameter storage, portable and battery-powered devices, communication interface settings, microprocessor/microcontroller calibration settings, and secure key storage.