The 25LC640-I/P is a 64 Kbit Serial Electrically Erasable PROM (EEPROM) organized as 8192 words 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 via its SPI-compatible serial bus. This low-power CMOS device features a 32-byte page structure, a maximum write cycle time of 5 ms, and various block write protection options. With high reliability features like data retention of over 200 years and an industrial temperature range of -40°C to +85°C, it is suitable for a wide variety of nonvolatile data storage applications.