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5.7. Clock Module
Clock control chip: 8563 T
32768 HZ: 8563 T reset the clock
Battery: External Battery, normal voltage 3.3 V
Diodes (DG1, DG2, DG3) : DG1 connects to 3.3 V voltage, DG2, DG3
Battery are connected at one end, when the mainboard electricity, DG2,
DG3 globe, DG1 conduction, Battery don't power supply; When the
mainboard power cuts, in turn, the Battery power supply, DG2, DG3
conduction, DG1 deadline
The clock module component
1
8563T
2
UL4
3
4
Diode
Battery
3.3V
DG1
DG2
8
7
6
5
X1
32768Hz
8563T
32768HZ
DG3
BATTERY
3.3V