RV5C386A_03 datasheet(3/49 Pages) RICOH

No de pièce	RV5C386A

Description	I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC WITH VOLTAGE MONITORING FUNCTION

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Fabricant	RICOH [RICOH electronics devices division]

Site Internet	http://www.ricoh.com

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3

RV5C386A

PIN DESCRIPTIONS

Pin No. Symbol

Item

Description

2

SCL

Serial clock line

This pin is used to input shift clock pulses to synchronize data input/output to and

from the SDA pin with this clock. Allows a maximum input voltage of 5.5 volts

regardless of supply voltage.

3

SDA

Serial data line

This pin inputs and outputs written or read data in synchronization with shift clock

pulses from the SCL pin. Allows a maximum input voltage of 5.5 volts regardless

of supply voltage.

6INTRA

Interrupt output A

This pin outputs periodic interrupt pulses and alarm interrupt (Alarm_D) to the

CPU. This pin is off when power is activated from 0V. Nch. open drain output.

4

INTRB

Interrupt output B

This pin is used to output alarm interrupt signals(Alarm_W) to the CPU. This pin

is off when power is activated from 0V. Nch. open drain output.

1

32KOUT

32-kHz Clock Output

The 32KOUT pin is used to output 32.768kHz clock pulses. CMOS push-pull

output. The output is disabled if the CLKC pin is set to “L” or open.

7

CLKC

Clock Control Input

The CLKC pin is used to control output of the 32KOUT pin. The clock output is

disabled and held low when the pin is set to “L”or open. Incorporates a pull down

resistor.

The OSCIN and OSCOUT pins are used to connect the 32.768-kHz crystal

oscillator (with all other oscillation circuit components built into the RV5C386A).

The VDD pin is connected to the power supply. The VSS pin is grounded.

9

OSCIN

Oscillatory Circuit

8

OSCOUT

Input/Output

10

VDD

Positive Power Supply Input

5

VSS

Negative Power Supply Input

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