Microchip 24LC128 128-Kbit I2C Serial EEPROM IC

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The Microchip Technology Inc. 24LC128 is a 16K x 8 (128 Kbit) Serial Electrically Erasable PROM (EEPROM), capable of operation across a broad voltage range (1.7V to 5.5V). It has been developed for advanced, low-power applications such as personal communications or data acquisition. This device also has a page write capability of up to 64 bytes of data. This device is capable of both random and sequential reads up to the 128K boundary. Functional address lines allow up to eight devices on the same bus, for up to 1 Mbit address space.



  • Single Supply with Operation down to 1.7V for 24AA128/24FC128 devices, 2.5V for 24LC128 devices
  • Low-Power CMOS Technology: - Write current 3 mA, typical - Standby current 100 nA, typical
  • 2-Wire Serial Interface, I2C™ Compatible
  • Cascadable up to Eight Devices
  • Schmitt Trigger Inputs for Noise Suppression
  • Output Slope Control to Eliminate Ground Bounce
  • 100 kHz and 400 kHz Clock Compatibility
  • 1 MHz Clock for FC Versions
  • Page Write Time 5 ms, typical
  • Self-Timed Erase/Write Cycle
  • 64-Byte Page Write Buffer
  • Hardware Write-Protect
  • ESD Protection >4000V
  • More than 1 Million Erase/Write Cycles
  • Data Retention > 200 years
  • Factory Programming Available
Type Serial EEPROM IC
Operating Voltage Min.
Operating Voltage Max.
Max. Clock Frequency 400kHz
Page Size
64 bytes
Write Protect Scheme Full Array
Country of Origin China


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