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5. BLOCK DIAGRAM
NM360
LCD diriver
CPU
µPD3056G-007
RAM
µPD43257AGU
-10/12LL
RAM
µPD43257AGU
-10/12LL
KEYBOARD
Jack
LCD
Voltages
switching
circuit
VCC
S-81250
HG-RD
Contrast
V1~V5
VDD
Power Supply
Battery
(CR-2032 X 3)
XC61AN
6302PR
GND
ON OFF
KAC,
K1~K14
Tx
Rx
P0P1
SW, ISW
Data Bus
Address
Bus
VDD1
VDD2
LCD
SF-4300A LD-B8272AY
SF-4600 CD408-TS
TAB Ass'y
L571-1 Ass'y
CONTRASTV1 V2 V3 V4 V5
Max.(V) 1.5 3.0 5.5 7.0 8.5
Min.(V) 1.0 2.0 4.0 5.0 6.0
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