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RV5C386A Datasheet(PDF) 3 Page - RICOH electronics devices division

Part No. RV5C386A
Description  I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC WITH VOLTAGE MONITORING FUNCTION
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Manufacturer  RICOH [RICOH electronics devices division]
Direct Link  http://www.ricoh.com
Logo RICOH - RICOH electronics devices division

RV5C386A Datasheet(HTML) 3 Page - RICOH electronics devices division

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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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