rs5c338a RICOH Co.,Ltd., rs5c338a Datasheet - Page 41

• Manufacturer Part Number: rs5c338a
• Description: 3-wire Serial Interface Real-time Clock Ics With Voltage Monitoring Function
• Manufacturer: RICOH Co.,Ltd.

7. Typical Characteristics
•
7.1 Timekeeping Current vs. Supply Voltage
7.3 CPU Access Current vs. SCLK Clock Frequency
Test Circuit
(with no 32-kHz clock output)
R
OSCOUT
×
32KOUT
OSCIN
5C338A
VDD
0.8
0.6
0.4
0.2
50
40
30
20
10
V
0
SS
1
0
0
0
(CE=Open, Output=Open, Topt=25˚C)
SCLK Clock Frequency (kHz)
1
32.768kHz
500
Supply Voltage V
V
DD
2
(Output=Open, Topt=25˚C)
=5V
1000
3
DD
4
1500
V
(V)
DD
Frequency
=3V
counter
5
2000
6
7.2 Timekeeping Current vs. Supply Voltage
7.4 Timekeeping Current vs. Operating Temperature
(with 32-kHz clock output)
(with no 32-kHz clock output)
X'tal : 32.768kHz
Topt : 25˚C
Output pins : Open
2.5
1.5
0.5
1.5
0.5
3
2
1
0
2
1
0
–60 –40
0
(R
(C
Operating Temperature Topt(˚C)
(CE=Open, Output=Open, Topt=25˚C)
1
L
(CE=Open, Output=Open, Topt=25˚C)
=30kΩ TYP.)
=6pF to 8pF)
1
Supply Voltage V
–20
2
0
20
3
40
DD
4
(V)
60
R
5
80
×
5C338A
60
6
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