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RS5C372A-E2-F Datasheet(PDF) 4 Page - RICOH electronics devices division

Part No. RS5C372A-E2-F
Description  I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
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Manufacturer  RICOH [RICOH electronics devices division]
Direct Link  http://www.ricoh.com
Logo RICOH - RICOH electronics devices division

RS5C372A-E2-F Datasheet(HTML) 4 Page - RICOH electronics devices division

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RS5C372A
4
PIN DESCRIPTIONS
Pin No.
Symbol
Name
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. Up to 6V
beyond VDD may be input.
3
SDA
Serial Data Line
This pin inputs and outputs written or read data in synchronization
with shift clock pulses from the SCL pin. Up to 6V beyond VDD may
be input. This pin functions as an Nch open drain output.
5
INTRA
Interrupt Output A
This pin outputs periodic interrupt pulses and alarm interrupt
(Alarm_A, Alarm_B) to the CPU. This pin is off when power is
activated from 0V. This pin functions as an Nch open drain
output.
1
INTRB
Interrupt Output B
This pin outputs 32.768kHz clock pulses (when 32.768kHz
crystal is used), periodic interrupt pulses to the CPU or alarm
interrupt (Alarm_B). It outputs 32.768kHz when power source
is activated from 0V. This pin functions as an Nch open drain
output.
7
6
OSCIN
OSCOUT
Oscillator Circuit
Input/Output
These pins configure an oscillator circuit by connecting a 32.768kHz or
32.000kHz crystal oscillator between the OSCIN-OSCOUT pins.
(Any other oscillator circuit components are built into the RS5C372A.)
8
4
VDD
VSS
Positive Power Supply Input
Negative Power Supply Input
The VDD pin is connected to the positive power supply and VSS
to the ground.
ABSOLUTE MAXIMUM RATINGS
(Vss
0V)
Symbol
Item
Conditions
Ratinge
Unit
VDD
Supply Voltage
0.3 to 7.0
V
VI
Input Voltag
SCL, SDA
0.3 to 7.0
V
VO1
Output Voltage 1
SDA
0.3 to 7.0
V
VO2
Output Voltage 2
INTRA , INTRB
0.3 to 12
PD
Power Dissipation
Topt
25C
300
mW
Topt
Operating Temperature
40 to 85
C
Tstg
Storage Temperature
55 to 125
C
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum ratings are threshold limit values that must not be exceeded even for an instant under
any conditions. Moreover, such values for any two items must not be reached simultaneously.
Operation
above these absolute maximum ratings may cause degradation or permanent damage to the device.
These are stress ratings only and do not necessarily imply functional operation below these limits.


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