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3.1.4.
Circuit Operation (Handset)
[Changed from original section “4.4. Circuit Operation (Handset)”]
3.1.4.1.
Power Supply Circuit/Reset Circuit
Circuit Operation:
When power on the Handset, the voltage is as follows;
BATTERY(2.2 V ~ 2.6 V: BATT+)
BATTERY(2.2 V ~ 2.6 V: BATT+)
F1 Q2 (1.8 V), IC1-44pin (3.0V)
The Reset signal generates IC1 (71 pin) and 1.8 V.
1.8 V
Reset
(IC1_71pin)
(IC1_71pin)
Battery +
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