Casio CASSIOPEIA A-20 User Manual

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AC ADAPTER DETECTOR
BACKUP BATTERY DETECTOR
VDETECTOR 2
DETECTOR CIRCUIT
The detector circuit consistes of 7 blocks as follows;
1 : VDETECTOR1 (Alkaline and Li-ion) 5 : Full charge detector
2 : VDETECTOR2 (Alkaline and Li-ion) 6 : 3V detector (AC adaptor is not used)
3 : Backup battery detector 7 : PCMCIA voltage detector
4 : AC Adaptor detector
VDETECTOR 1
Alkaline Detector
V3SYS
VDET1B
(L=Low battery message)
IC100(2.0V±5%)
Li-ion Detector
IC101(3.3V±2%) VDET1RB
(L=Low battery message)
Alkaline Detector
VDET2
(H=Forced power off)
IC102(1.6V±1%)
Li-ion Detector
IC103(3.0V±2%)
VDET2R
(H=Forced power off)
IC112(2.7V±1%)
VDETS
(H=Low battery message)
Q105
ACDTCB
(L=Adapter used)
Q101
CHGDTCTB
(L=Full charge)
IC107(3.4V±1%)
VDET3B
(L=Low 3V voltage message)
PCMCIA VOLTAGE DETECTOR
5 Voltage
IC109(4.5V±2%)
3 Voltage
IC110(2.1V±2%)
VDTC5B
(L=Low PCMCIA voltage message)
VDTC3B
(L=Low PCMCIA voltage message)
VSUB
CN101
Li-ion(CN105)
V3MAIN
VPC
FULL CHARGE DETECTOR
3V DETECTOR (AC ADAPTOR NO USED)

Casio CASSIOPEIA A-20 Specifications

General

Brand	Casio
Model	CASSIOPEIA A-20
Category	Handhelds
Language	English