Timer ICs / ASSPs

Programmable Interval Timer IC S-35740 Series

DatasheetApr. 08, 2019


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The interval timer IC allows for intermittent system operation by inputting a signal to the system at fixed periods of time.
The S-35740 outputs an interval signal (fixed-cycle interrupt signal). The frequency and duty ratio of the interval signal (fixed-cycle interrupt signal) can be set freely by users via a 2-wire serial interface.
The S-35740 has a 24-bit timer. For example, users can obtain the cumulative energization time of the system since the timer performs a count-up action every second.


Interval signal output function (Fixed-cycle interrupt signal output function)
Settable interval signal frequency and duty ratio, with an output control pin
Low current consumption
0.2 µA typ. (Quartz crystal: Cl = 6.0 pF, Vdd = 3.0 V, ENBL pin = “H”, Ta = +25°C)
Wide range of operation voltage
1.8 V to 5.5 V
2-wire (I2C-bus) CPU interface
Built-in 32.768 kHz crystal oscillation circuit
Operation temperature range
Ta = -40°C to +85°C
Lead-free (Sn 100%), halogen-free



  • IoT communications device
  • Monitoring device
  • Security device
  • Battery system
  • Energy harvesting system