The Microchip 25CSM04 is a 4 Mb Serial EEPROM with a Serial Peripheral Interface (SPI) capable of operation across a broad voltage range (2.5V to 5.5V). The device is organized as one block of 524,288 bytes of 8-bits each (512 Kbyte).It includes a security register with a 128-bit unique serial number and a 256-byte (2048-bit) user-programmable lockable ID page, built in ECC, and a configurable write protection scheme for all bytes. The 25CSM04 is optimized for use in consumer electronics, industrial, and medical applications where reliable and dependable non-volatile memory storage is essential, and is packaged in SOIC, DFN, and WLCSP purchase options.

524,288 x 8 bit