Casio FV-600BA Service Manual & Parts List page 55

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Pin No.
Name
79
KEYIN2
80
KEYIN1
81
TEMP
82
POWER KEY
83
REMOTE
84
XOUT
85
XIN
86
VDD0
87
VDD1
88 ~ 93
NC
94
GND1
95
GND2
96
VCO
97
VCO
98
PSC
99
CE
100
A CUT
*
Pin No.
Key Name
79
KEYIN1
80
KEYIN2
I/O
Key input terminals
In
CPU identifies the key signal by its voltage.
In
Temperature detection terminal from thermistor
Power key monitor terminal
In
H: Power on
L: Power off
In
Remote control signal terminal
Clock oscillator terminals
In
VDD terminals (5 V)
Not used
GND terminals
Not used
Sound switching signal
Out
H: Beep
L: Voice
Key Name
VOLUME (–)
VOLUME (+)
CONTROL (–)
CONTROL (+)
FRONT PRJ / REAR PRJ
MEMU
SET
— 54 —
Description
Input Voltage Renge
4.570 V or more
3.555 ~ 4.570 V
0.508 ~ 1.532 V
4.570 V or more
2.359 ~ 3.555 V
1.532 ~ 2.539 V
0.508 ~ 1.532 V
Note
*

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