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RS5C372A Datasheet(PDF) 53 Page - RICOH electronics devices division

Part No. RS5C372A
Description  I2C bus SERIAL INTERFACE REAL-TIME CLOCK ICs
Download  59 Pages
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Manufacturer  RICOH [RICOH electronics devices division]
Direct Link  http://www.ricoh.com
Logo RICOH - RICOH electronics devices division

RS5C372A Datasheet(HTML) 53 Page - RICOH electronics devices division

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RS5C372A/B
49
6. Typical Characteristic Measurements
Test Circuit
X'tal : 32.768kHz
(R1=30k
Ω TYP.)
(CL=6pF to 8pF)
Topt : 25˚C
Output pins : Open
32.768kHz
OSCIN
OSCOUT
VDD
VSS
INTRB (32KOUT)
8
7
6
4
1
Frequency
counter
*
1
*
1
6.1 Standby Supply Current vs. Power Supply Voltage
Power Supply Voltage VDD(V)
0
0
1
2
2
4
6
(Topt=25˚C, INTRB(32KOUT)=OFF)
Power Supply Voltage VDD(V)
0
0
1
2
2
4
6
(Topt=25˚C, INTRB=Open)
SCL Clock Frequency(kHz)
0
0
10
15
5
20
200
400
600
(Topt=25˚C, SDA=Open)
VDD
=3V
VDD
=5V
*1) INTRB applies to the RS5C372A, and the 32KOUT applies
to the RS5C372B. The RS5C372B does not need pull up
resistor.
0
0
1
2
3
4
5
6
2
4
6
(Topt=25˚C, 32KOUT=Open)
Power Supply Voltage VDD(V)
6.2 Supply Current During 32k Clock Output
vs. Power Spply Voltage (RS5C372A)
6.2 Supply Current During 32k Clock Output
vs. Power Spply Voltage (RS5C372B)
6.3 Supply Current During CPU Access
vs. SCL Clock Frequency


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