125°C Operation 2-wire Counter Convenience Timer S-35770 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.
Safety critical components typified by engine, transmission, suspension and ABS, and EV/HEV/PHEV related equipment, etc.Meter, body, headlamp, ITS, etc.Accessory, car navigation, car audio system, etc.

The convenience timer is a CMOS timer IC which operates with low current consumption, and is suitable for the time management of the relative time.
The S-35770 Series counts the number of clocks input from an external device.
The counter is a 24-bit binary up counter.
The counter data can be read via a 2-wire serial interface.

Caution: This product can be used in vehicle equipment and in-vehicle equipment. Before using the product in the purpose, contact to SII is indispensable.


External clock signal count function
Possible to count from 0 to 16,777,215 with an output pin for counter loop flag
Low current consumption
0.01 μA typ. 
(Vdd = 3.0 V,  Ta = +25°C, out of communication (CLKIN pin = 0 V))
Wide range of operation voltage
1.5 V to 5.5 V
2-wire (I2C-bus) CPU interface
Operation temperature range
Ta = -40°C to +125°C
Lead-free (Sn 100%), halogen-free
AEC-Q100 qualified*1

*1. Contact our sales office for details.


  • Various pulse counters