The R1EX24xxx series are two-wire serial interface 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 the CMOS process, and low-voltage circuitry technology. They also have a 16-byte page programming function to make their write operation faster.

• Single supply: 1.8V to 5.5V
• Two-wire serial interface (I²C serial bus)
• Clock frequency: 400kHz
• Power dissipation: Standby: 2.0μA (max) Active (Read): 1.0mA (max) Active (Write): 3.0mA (max)
• Automatic page write: 16-byte/page
• Write cycle time: 5ms
• Endurance: 1,000k or more Cycles at 25°C
• Data retention: 100 or more Years at 25°C
• Small size packages: SOP 8-pin, TSSOP 8-pin
• Shipping tape and reel TSSOP 8-pin: 3,000 IC/reel SOP 8-pin: 2,500 IC/reel
• Temperature range: −40°C to +85°C
• Lead-free products. (#U0, #S0)
• Halogen-free products. (#U0)