The 25C040-E/SN is a 2048-bit Serial Electrically Erasable Programmable Read-Only Memory (EEPROM) from Microchip Technology. This device utilizes a serial peripheral interface (SPI) compatible protocol to communicate with the host processor or controller. It has an endurance of up to 1 million write/erase cycles, with a read access time of 100ns and a write access time of 5ms. The 25C040-E/SN comes in 8-pin SOIC, 8-pin PDIP, and 8-pin TSSOP packages and is RoHS-compliant. It is ideal for applications that require non-volatile storage of data in automotive, medical and industrial applications.