R1EX25002ASA00I/R1EX25004ASA00I R1EX25002ATA00I/R1.
R1EX25002ATA00I - Serial Peripheral Interface Electrically Erasable and Programmable Read Only Memory
R1EX25002ASA00I/R1EX25004ASA00I R1EX25002ATA00I/R1EX25004ATA00I Serial Peripheral Interface 2k EEPROM (256-word × 8-bit) 4k EEPROM (512-word × 8-bit) .