Automotive ICs

105°C Operation SPI Serial EEPROM for Automotive S-25C128A H Series (128K-bit)

The S-25C128A  H series devices are high-temperature operation SPI serial EEPROMs for automotive components. The S- 25C128A  H series has the capacity of 128 K-bit and the organization of 16384 words × 8-bit. Page write and sequential read are available.

Caution: Before using the product in automobile control unit or medical equipment, it is imperative to contact our sales representatives.


Operating voltage range
Read: 2.5 V to 5.5 V
Write: 2.5 V to 5.5 V
Operation frequency
5.0 MHz (2.5 V to 5.5 V)
Write time
5.0 ms max. 
SPI mode (0, 0) and (1, 1)
Page Write
64 bytes / page
Sequential read
Monitors Write to the memory by a status register
Write protect
Software, Hardware
Protect area: 25%, 50%, 100%
Function to prevent malfunction by monitoring clock pulse
Write protect function during the low power supply voltage
CMOS schmitt input
(CS , SCK, SI, WP , HOLD )
106cycles/word*1 (Ta = +25°C)
3 × 105cycles/word*1 (Ta = +85°C)
2 × 105cycles/word*1 (Ta = +105°C)
Data retention
100 years (Ta = +25°C)
30 years (Ta = +85°C)
25 years (Ta = +105°C)
Memory capacitance
128 K-bit
Initial delivery state
FFh, SRWD = 0, BP1 = 0, BP0 = 0
Operation temperature range
Ta = −40°C to +105°C 
Lead-free, Sn 100%, halogen-free
AEC-Q100 qualified*2 

*1. For each address (Word: 8 bits)
*2. Contact our sales representatives for details.

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.