S-35720C02A-K8T2U

Programmable Timers And Oscillators Overview

The S-35720C02A-K8T2U is a CMOS convenience timer IC designed for automotive applications with operation up to 125°C. It features a 24-bit binary-up counter and an internal 32.768 kHz crystal oscillation circuit. The device outputs interrupt signals when the timer value matches settings on the SET0 and SET1 pins, supporting one-shot loop time-out modes. It operates within a voltage range of 1.8 V to 5.5 V and consumes 0.2 µA typ. at 3.0 V. The part includes a built-in chattering elimination circuit for the reset pin and is housed in a TMSOP-8 package.

Programmable Timers And Oscillators Feature Summary

• Built-in 32.768 kHz quartz crystal oscillation circuit
• Low current consumption: 0.2 µA typ. (VDD = 3.0 V)
• Wide operating voltage range: 1.8 V to 5.5 V
• Automotive grade operation temperature: −40°C to +125°C
• CMOS output form with selectable pull-up resistor on RST pin

Programmable Timers And Oscillators Applications

• Time management of various systems during sleep periods
• Vehicle equipment and in-vehicle equipment timing control

Programmable Timers And Oscillators Procurement Notes

Verify AEC-Q100 qualification details directly with ABLIC sales representatives before deployment in vehicle equipment. Confirm that external components such as the quartz crystal meet automotive carrying requirements. Ensure power supply voltage rises from 0.2 V or lower to 1.8 V within 10 ms for proper power-on detection circuit operation.

Programmable Timers And Oscillators Selection Notes

Select this model for its CMOS output form and integrated pull-up resistor on the RST pin. The 'C' option code specifies a load capacitance (CL) of 6.0 pF for the connected quartz crystal. This configuration supports one-shot loop time-out with a pulse width of 125 ms. Verify compatibility with the required interrupt time settings via the SET0 and SET1 pins.

Programmable Timers And Oscillators Part Context

This component belongs to the S-35720 A Series of convenience timers. It is specifically designated by the suffix C02A, indicating the CMOS output type and the inclusion of a pull-up resistor on the reset pin. The K8T2 suffix denotes the TMSOP-8 package with tape packing specification.

Programmable Timers And Oscillators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Contact ABLIC Inc. sales representatives for details on alternative products or specific toggle operation options.

Programmable Timers And Oscillators FAQ

What is the interrupt signal output form for the S-35720C02A?

The S-35720C02A features a CMOS output form. In one-shot loop time-out mode, it outputs periodic 'H' pulses with a width of 125 ms.

How does the RST pin handle input noise?

The RST pin has a built-in chattering elimination circuit that samples the input signal three times at an 8 Hz clock period. Inputs must be maintained for longer than 0.438 seconds to ensure determination.

What are the recommended quartz crystal characteristics?

For the CL = 6.0 pF option, use a quartz crystal with an equivalent series resistance (R1) of 80 kΩ max. An oscillation allowance of 5 times or more at power-on is recommended.