3-wire Serial EEPROM S-93C46C/56C/66C/76C/86C

This IC is a high speed, low current consumption, 3-wire serial EEPROM with a wide operating voltage range. This IC has the capacity of 1 K-bit, 2 K-bit, 4 K-bit, 8 K-bit and 16 K-bit, and the organization is 64 words × 16-bit, 128 words × 16-bit, 256 words × 16-bit, 512 words × 16-bit and 1024 words × 16-bit, respectively. Sequential read is available, at which time addresses are automatically incremented in 16-bit blocks. The communication method is by the Microwire bus.


Memory capacity
S-93C46C : 1 K-bit (64-word ×16-bit)
S-93C56C : 2 K-bit (128-word ×16-bit)
S-93C66C : 4 K-bit (256-word ×16-bit)
S-93C76C : 8 K-bit (512-word ×16-bit)
S-93C86C : 16 K-bit (1024-word ×16-bit)
Operation voltage range
Read : 1.6 V to 5.5 V
Write : 1.8 V to 5.5 V
Operation frequency
2.0 MHz max.
Write time
4.0 ms max.
Sequential read
Write protect function during the low power supply voltage
Function to protect against write due to erroneous instruction recognition
106 cycle / word*1 (Ta = +85°C)
Data retention
100 years(Ta = +25°C)
50 years(Ta = +85°C)
Initial delivery state
Operation temperature range
Ta = −40°C to +85°C
Lead-free (Sn 100%), halogen-free

*1. For each address (Word: 16-bit)

Parts List

  • U(Ux), S and G at the end of the product name of ABLIC Inc. were used to indicate different material specifications as “environmental code”,
    however, these have now been unified into “lead-free and halogen-free” and are identical in terms of environmental quality.
  • Note: Lead-free plating other than 100% Sn is applied to some limited old products, therefore, please contact our sales representatives for details.
  • 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.