S-35710B01A-K8T2U Datasheet, PDF(5/33 Page) Seiko Instruments Inc

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S-35710B01A-K8T2U Datasheet, PDF (5/33 Pages) Seiko Instruments Inc – Low current consumption

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Rev.1.5_00

FOR AUTOMOTIVE 125Â°C OPERATION 2-WIRE CONVENIENCE TIMER

S-35710 Series

ï® Pin Functions

1. SDA (I/O for serial data) pin

This is a data input / output pin for I2C-bus interface. The SDA pin inputs / outputs data by synchronizing with a clock

pulse from the SCL pin. This pin has CMOS input and Nch open-drain output. Generally in use, the SDA pin is pulled

up to VDD potential via a resistor, and is used with wired-OR connection of other device of Nch open-drain output or

open collector output.

2. SCL (Input for serial clock) pin

This is a clock input pin for I2C-bus interface. The SDA pin inputs / outputs data by synchronizing with this clock.

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3. RST (Input for reset signal) pin

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This pin inputs the re__s_e__t__signal. The timer is reset when inputting "L" to _t_h__e___RST pin. The INT pin is set to "H" when

inputting "H" to the RST pin, and the timer starts the operati_o__n__.__The RST pin has a built-in chattering elimination

circuit. Re_g_a__r_d__ing the chattering elimination circuit, refer to "ï® RST Pin".

Also, the RST pin with / without a pull-up resistor can be selected.

4. INT (Output for interrupt signal) pin

This pin outputs an interrupt signal. The interrupt signal is output when the time written to the wake-up time register

comes. The interrupt signal output (time-out type) of one-shot loop time-out / handshake time-out can be selected as

the option. Regarding the operation of the interrupt signal output, refer to "ï® INT Pin Interrupt Signal Output".

Also, the INT pin output form of Nch open-drain output / CMOS output can be selected.

5. XIN, XOUT (Connection for crystal oscillator) pins

Connect a crystal oscillator between the XIN pin and the XOUT pin.

6. VDD (Positive power supply) pin

Connect this pin with a positive power supply. Regarding the values of voltage to be applied, refer to

"ï® Recommended Operation Conditions".

7. VSS pin

Connect this pin to GND.

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