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S-35720C01A-K8T2U Datasheet(PDF) 5 Page - Seiko Instruments Inc |
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S-35720C01A-K8T2U Datasheet(HTML) 5 Page - Seiko Instruments Inc |
5 / 21 page FOR AUTOMOTIVE 125°C OPERATION WITH INTERRUPT TIME SETTING PIN CONVENIENCE TIMER Rev.1.1_00 S-35720 Series 5 Pin Functions 1. SET0, SET1 (Input for interrupt time setting) pins These pins input the interrupt time setting signal. The setting signals are input when the RST _______ pin changes from "L" to "H". As a result, interrupt time does not change even if the SET0 pin and the SET1 pin change during timer operation. In one-shot loop time-out and handshake time-out, 4 types of interrupt time can be selected depending on the pin settings. Interrupt time of the timer can be selected as the option on the second time scale from 1 second to 194 days (Approximately half a year). 2. RST _______ (Input for reset signal) pin This pin inputs the reset signal. The timer is reset when inputting "L" to the RST _______ pin. The INT pin is set to "H" when inputting "H" to the RST _______ pin, and the timer starts the operation. The RST _______ pin has a built-in chattering elimination circuit. Regarding the chattering elimination circuit, refer to " Chattering Elimination of RST _______ Pin". Also, the RST _______ pin with / without pull-up resistor can be selected. 3. INT (Output for interrupt signal) pin This pin outputs an interrupt signal. The interrupt signal is output when the time set to the SET0 pin and the SET1 pin comes. The interrupt signal output (time-out type) of one-shot loop time-out / handshake time-out / toggle operation *1 can be selected as the option. Regarding the operation of the interrupt signal output, refer to " INT Pin Interrupt Signal Output". Also, the INT pin output form of Nch open-drain output / CMOS output can be selected. *1. Contact our sales office for the details of toggle operation. 4. XIN, XOUT (Connection for crystal oscillator) pins Connect a crystal oscillator between the XIN pin and the XOUT pin. 5. VDD (Positive power supply) pin Connect this pin with a positive power supply. Regarding the values of voltage to be supplied, refer to " Recommended Operation Conditions". 6. VSS pin Connect this pin to GND. |
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