Automotive 105°C Operation 3-wire Serial EEPROM S-93C46C/56C/66C/76C/86C H Series

Available Applications
Automotive ICs are categorized according to their application. The following symbols indicate the types of applications for which an IC can be used.
Meter, body, headlamp, ITS, etc.
Accessory, car navigation, car audio system, etc.

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) (under development)
S-93C86C : 16 K-bit (1024-word ×16-bit) (under development)
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)
8 × 105 cycle / word*1 (Ta = +105°C)
Data retention
100 years (Ta = +25°C)
50 years (Ta = +105°C)
Initial delivery state
Operation temperature range
Ta = −40°C to +105°C
Lead-free (Sn 100%), halogen-free
AEC-Q100 in process*2

*1. For each address (Word: 16-bit)
*2. Contact our sales office for details.