S-35720C01I-K8T2U

Programmable Timers And Oscillators Overview

The S-35720C01I-K8T2U is a pin-selectable wake-up timer IC from ABLIC Inc., designed for intermittent system operation. It features a 24-bit binary-up counter that compares internal timer values against settings on the SET0 and SET1 pins to generate an interrupt signal. The device operates within a voltage range of 1.8 V to 5.5 V and consumes 0.2 µA typical current at 3.0 V. It includes a built-in 32.768 kHz crystal oscillation circuit with fixed load capacitance (CL = 6.0 pF). The INT pin provides an Nch open-drain output, supporting one-shot loop time-out intervals of 1 s, 10 s, 30 s, or 60 s based on pin configurations.

Programmable Timers And Oscillators Feature Summary

• Pin-selectable interrupt times: 1 s, 10 s, 30 s, or 60 s via SET0/SET1 inputs
• Ultra-low current consumption: 0.2 µA typ. at VDD = 3.0 V
• Built-in 32.768 kHz oscillator with fixed CL = 6.0 pF capacitors
• Nch open-drain INT output with one-shot loop time-out functionality

Programmable Timers And Oscillators Applications

• IoT communications devices
• Monitoring systems
• Security devices
• Battery-powered systems
• Energy harvesting applications

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix K8T2U corresponds to the TMSOP-8 tape packing specification before ordering. Confirm that the Nch open-drain output type matches the system interface requirements, as the C02 variant offers CMOS output. Ensure external quartz crystals meet the CL = 6.0 pF requirement for proper oscillation start characteristics.

Programmable Timers And Oscillators Selection Notes

Select this model over the C02 variant if an open-drain interrupt output is required for wired-OR configurations. The C01I version includes a pull-up resistor on the RST pin but requires external pull-ups for the INT pin if high-level logic is needed. Verify that the 1.8 V to 5.5 V operating range aligns with the target power supply rails.

Programmable Timers And Oscillators Part Context

This component belongs to the S-35720 Series of wake-up timer ICs. It shares the core 24-bit counter and oscillator architecture with the S-35720C02I, differing primarily in the INT pin output stage. The series is engineered for low-power periodic wake-up tasks in battery-operated environments.

Programmable Timers And Oscillators Replacement Considerations

The S-35720C02I-K8T2U is a direct functional alternative with identical timing parameters but features a CMOS output instead of Nch open-drain. Other S-35710 series parts are not compatible due to different architectures and pinouts.