S-8424AAAFT-TB-X Datasheet, PDF (32/46 Pages) Seiko Instruments Inc – BATTERY BACKUP SWITCHING IC

BATTERY BACKUP SWITCHING IC
S-8424A Series
2. When Using Secondary Battery as Backup Battery
+
10 μF
Rev.3.0_01
+
10 μF
+
10 _μF
6V
0.1 _μF
3V
VRO
VIN
VOUT
S-8424A
Series
VBAT
CS
RESET
VSS
100 kΩ
VCC
100 kΩ
Microcontroller
INT
RESET
Figure 24 Application Circuit 2
Remark The backup battery can be floating-recharged by using voltage regulator 1.
3. Memory Card
Card unit
VIN
BDT2
BDT1
+
10 _μF
100 kΩ 100 kΩ
VIN
VOUT
S-8424A
10 μF ₊
Series
PREEND
RESET
CS
VBAT
100 kΩ
SRAM
CS
VSS
0.1 μ F
3V
CS
Figure 25 Application Circuit 3
Caution The above connections and values will not guarantee correct operation. Before setting these
values, perform sufficient evaluation on the application to be actually used.
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