Wake-up Timer IC | Interval Timer IC
An interval timer IC is a timer IC that enables intermittent system operation by inputting a signal to the system at fixed periods of time.
ABLIC’s interval timer IC consumes little power and allows flexible interval time settings.
These capabilities support the development of IoT communication devices, monitoring devices, security devices and a wide variety of other battery-operated systems or energy harvesting systems that require low power consumption.
- Ultra-low current consumption: 0.2 μA typ.*
- Flexible interval time settings
- Simple command settings (S-35740)
1. Ultra-low current consumption: 0.2 μA typ.*
The ultra-low current consumption of 0.2 μA is much lower than the current consumption of the built-in microcontroller timer. Using the interval timer IC instead of the microcontroller timer will substantially reduce system power consumption, contribute to longer battery life and enable use of more compact batteries.
*Current consumption varies with output frequency
2. Flexible interval time settings
- Interval time can be set by selecting a frequency from 32.768 kHz to 1 Hz.
- Both the duty ratio and the interval time can be set. (S-35740)
- To enable building highly flexible systems, our lineup includes the S-35740 that, via an interface, programs software time settings, and the S-35730 that provides frequency setting pins for hardware time selection.
3. Simple command settings (S-35740)
Three commands provide proper control of interval time settings.
- Write fixed-cycle interrupt signal setting register (Wfisr)
A command used for setting the interval time. A program provides flexible settings.
- Read fixed-cycle interrupt signal setting register (Rfisr)
A command used for confirming the set interval time.
Using this command with the Write fixed-cycle interrupt signal setting register makes it easy to properly set the interval time.
- Read time register (Rtr)
A command for confirming a 1 second or longer elapsed time.
It can be used to confirm elapsed time in intermittent operation.