2-wire Serial EEPROM For Dimm Serial Presence Detect S-34C04A

This IC is a 2-wire serial EEPROM for DIMM serial presence detect which operates in 1.7 V to 3.6 V voltage ranges. This IC has the capacity of 4 K-bit and the organization of 2 pages × 256-word × 8-bit. Page write and sequential read are available.
This IC operates with the I2C-bus at 1.0 MHz maximum.


Page write
16 bytes / page
Sequential read
Write protect function during low power supply voltage
Write protect
Individual software data protection for each of four 128-byte blocks
106 cycle / word*1 (Ta = +25°C)
Data retention
100 years (Ta = +25°C)
Memory capacity
4 K-bit
Initial delivery state
JEDEC standard compliant
Current consumption
Standby mode: 3.0 μA max.
Read operation mode: 0.4 mA max.
Write operation mode: 2.0 mA max.
Operation voltage range
1.7 V to 3.6 V
Operation frequenc
1.0 MHz max. (Vdd = 2.2 V to 3.6 V)
400 kHz max. (Vdd = 1.7 V to 3.6 V)
Noise suppression
Schmitt trigger and noise filter on input pins (SCL, SDA)
Operation temperature range
Ta = −20°C to +125°C
Sn 100%

*1. For each address (Word: 8-bit)