Preliminary Datasheet R1EX25512ASA00I R1EX25512ATA00I R10DS0044EJ0100 Serial Peripheral Interface Rev.1.00 512K EEPROM (64-Kword 8-bit) Oct.04, 2010 Description R1EX25xxx series is the Serial Peripheral Interface compatible (SPI) EEPROM (Electrically Erasable and Programmable ROM). They realize high speed, low power consumption and a high level of reliability by employing advanced MONOS memory technology and CMOS process and low voltage circuitry technology. They also have a 128-byte page programming function to make their write operation faster. Features Single supply: 1.8 V to 5.5 V Serial Peripheral Interface compatible (SPI bus) SPI mode 0 (0,0), 3 (1,1) Clock frequency: 5 MHz (2.5 V to 5.5 V), 3 MHz (1.8 V to 5.5 V) Power dissipation: Standby: 5 A (max) Active (Read): 5 mA (max) Active (Write): 5 mA (max) Automatic page write: 128-byte/page Write cycle time: 5 ms (max) Endurance: 1,000k Cycles 25 C Data retention: 100 Years 25 C Small size packages: SOP-8pin, TSSOP-8pin Shipping tape and reel TSSOP-8pin : 3,000 IC/reel SOP-8pin : 2,500 IC/reel Temperature range: 40 to +85C Lead free product. R10DS0044EJ0100 Rev.1.00 Page 1 of 20 Oct.04, 2010 R1EX25512ASA00I/R1EX25512ATA00I Ordering Information Type No. Internal organization Operating voltage Frequency Package R1EX25512ASA00I 512k bit (65536 8-bit) 1.8 V to 5.5 V 5 MHz 150 mil 8-pin plastic SOP (2.5 V to 5.5 V) PRSP0008DF-B (FP-8DBV) Lead free 3 MHz (1.8 V to 5.5V) R1EX25512ATA00I 512k bit (65536 8-bit) 1.8 V to 5.5 V 5 MHz 8-pin plastic TSSOP (2.5 V to 5.5 V) PTSP0008JC-B (TTP-8DAV) Lead free 3 MHz (1.8 V to 5.5V) Pin Arrangement 8-pin SOP/TSSOP S 1 8 VCC Q 2 7 HOLD W 3 6 C VSS 4 5 D (Top view) Pin Description Pin name Function C Serial clock D Serial data input Q Serial data output S Chip select W Write protect HOLD Hold V Supply voltage CC V Ground SS R10DS0044EJ0100 Rev.1.00 Page 2 of 20 Oct.04, 2010