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