Automotive ICs

125°C Operation 2-wire Counter Convenience Timer S-35770 Series

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