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 CMOS process and low voltage circuitry technology. They also have a 16-byte page programming function to make their write operation faster.


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



PDF 299 KB 日本語 Datasheet
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PDF 1.79 MB 日本語 Application Note
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PDF 1.32 MB Brochure
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Design & Development