7. Typical Characteristics
鈥?/div>
Test Circuit
R
脳
5C338A
X'tal : 32.768kHz
VDD
OSCIN
32.768kHz
(R
1
=30k鈩?TYP.)
(C
L
=6pF to 8pF)
Topt : 25藲C
Output pins : Open
Frequency
counter
OSCOUT
32KOUT
V
SS
7.1 Timekeeping Current vs. Supply Voltage
(with no 32-kHz clock output)
1
0.8
0.6
0.4
0.2
0
(CE=Open, Output=Open, Topt=25藲C)
7.2 Timekeeping Current vs. Supply Voltage
(with 32-kHz clock output)
(CE=Open, Output=Open, Topt=25藲C)
3
2.5
2
1.5
1
0.5
0
Timekeeping Current I
DD
(碌A)
0
1
2
3
4
5
6
Timekeeping Current I
DD
(碌A)
0
1
2
3
4
5
6
Supply Voltage V
DD
(V)
Supply Voltage V
DD
(V)
7.3 CPU Access Current vs. SCLK Clock Frequency
50
40
30
V
DD
=5V
20
10
0
V
DD
=3V
(Output=Open, Topt=25藲C)
7.4 Timekeeping Current vs. Operating Temperature
(with no 32-kHz clock output)
(CE=Open, Output=Open, Topt=25藲C)
Timekeeping Current I
DD
(碌A)
2000
CPU Access Current I
DD
(碌A)
2
1.5
1
0.5
0
500
1000
1500
0
鈥?0 鈥?0 鈥?0
0
20
40
60
80
60
SCLK Clock Frequency (kHz)
Operating Temperature Topt(藲C)
41