The 25LC040-I/SN is a 4 Kbit serial Electrically Erasable PROM (EEPROM) organized as 512 bytes of 8 bits each. It operates over a VCC range of 2.5V to 5.5V and supports a maximum clock frequency of 2 MHz. Key features include low-power CMOS technology, a 16-byte page write capability, block write protection, and a hardware write-protect pin (WP). With high reliability metrics such as 1 million erase/write cycles and over 200 years of data retention, it is well-suited for nonvolatile data storage in various industrial applications.