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MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No.
Pin Name
I/O
51
P15
O
52
P14
O
53
P13
O
54
P12
O
55
P11
O
56
P10
O
57
P07
O
58-64 P06-00
O
65,66 P37,36
O
67,68 SEG23,22
O
69-90 SEG21-0
O
91
Vcc
-
92
VREF
-
93
Avss
-
94
COM3
O
95
COM2
O
96
COM1
O
97
COM0
O
98
VL3
I
99
VL2
I
100
C2
I
How to Read the Destination Type
The destination type is set by reading the following microcomputer ports at
the time of reset-start of the microcomputer.
Once the destination type is read and set during the microcomputer
resetting, any change in the ports during the microcomputer operation will
be ignored.
Destination Type
K
M
J
X: don't care
Signal
P_MUTE
Power IC muting control.
ANT_CON
External antenna control.
P_CON
Power control output.
ILLUM_ON
Illumination control.
(NC)
Not used.
SW5
5V power control.
EQ_MUTE
Equalizer muting.
(NC)
Not used.
(NC)
Not used.
(NC)
Not used.
SEG22-1
LCD segment output.
Vcc
Power input (5 V).
VREF
A/D reference voltage input.
Avss
Analog power input (Vss).
(NC)
Not used.
COM3
LCD common output.
COM2
LCD common output.
COM1
LCD common output.
VL3
LCD power input.
VL2
LCD power input.
(NC)
Not used.
SEL1
L
L
H
KRC-108S/188
Description
SEL2
L
H
X
Logic
H: Power down.
H: ON
H: ON
H: ON
L: ON
H: MUTE
5
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