Rx5C348A/B
ꢀ Typical Characteristics
Test circuit
X’tal : 32.768kHz
(R1=30kΩ typ)
(CL=6pF to 8pF)
Topt : 25°C
VDD
OSCIN
32768Hz
OSCOUT
Output pins : Open
Frequency
Counter
32KOUT
VSS
Timekeeping Current vs. Supply voltage
(with no 32-kHz clock output)
Timekeeping Current vs. Supply voltage
(with 32-kHz clock output)
(CE=Open, Output=Open, Topt=25°C,Rx5C348A)
(CE=Open, Output=Open,Topt=25°C)
2
1
0.8
0.6
0.4
0.2
0
1.5
Rx5C348A
1
Rx5C348B
0.5
0
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Supply Voltage VDD(v)
Supply Voltage VDD(v)
CPU Access Current vs. SCLK Clock Frequency
(Output=Open, Topt=25°C)
Timekeeping Current vs. Operating Temperature
(with no 32-kHz clock output)
(CE=Open, Output=Open)
50
40
30
2
1.5
1
VDD=5v
VDD=3v
20
10
0
0.5
0
-60 -40 -20
0
20 40 60 80 100
0
500
1000
1500
2000
SCLK Clock Frequency (kHz)
Operating Temperature Topt( C)
°
12345
Rev.2.01
- 40 -
RICOH [ RICOH ELECTRONICS DEVICES DIVISION ]
