2-wire Serial EEPROM S-24C256C (256K-bit)

The S-24C256C is a 2-wire, low current consumption and wide range operation serial EEPROM.. The S-24C256C has the capacity of 256 K-bit, and the organization is 32768 words × 8-bit. Page write and sequential read are available.


Operating voltage range
Read: 1.6 V to 5.5 V
Write: 1.7 V to 5.5 V
Page write
64 bytes / page
Sequential read
Operation frequency
1.0 MHz (Vcc = 2.5 V to 5.5 V)
400 kHz (Vcc = 1.6 V to 2.5 V)
Write time
5.0 ms Max.
Noise suppression
Schmitt trigger and noise filter on input pins (SCL, SDA)
Write protect function during the low power supply voltage
106cycles/unit*1 (Ta = +25°C)
Data retention
100 years (Ta = +25°C)
Memory capacitance
256 K-bit
Write protect
Initial shipment data
Lead-free (Sn 100%), halogen-free*2

*1. For each unit (unit: the 4 bytes with the same address of W14 to W2)
*2. Refer to “Product Name Structure” of the data sheet for details.

Parts List

  • These descriptions may be different from the actual product name and parameter.
    Please confirm the product name and specifications with the data sheet again.
  • The information herein is subject to change without notice.