Advertisement
KMC-18/18A
SEMICONDUCTOR DATA
~PD75008-732-3B4
: KMC-18A (lC2)
Pin
Terminal
1/0
Function
No.
Name
1-3
P70 - P72
I
Key data input
4
P63
0
PTT output
5
P62
0
HOOK output
6
P61
0
Backlight: Bright (Output high: Bright is selected.)
7
P60
0
Backlight: Dark (Output high: Dark is selected.)
8
P53
0
DTMF output enable (Output high: Tone is output.)
9
P52
0
Tone select (Output high: Row tone is output.)
10
P51
0
Tone select (Output low: Column tone is output.)
11
P50
0
Microphone mute control (Output high: Mute on)
12
NC
-
+5V
13 -16
P40 - P43
0
DTMF tone data output
17
Vss
-
GND
18
XT1
I
Open (not used)
19
XT2
0
Open (not used)
20
RESET
I
Reset input (Low: Reset)
21
X1
I
System clock input
22
X2
I
System clock input
23
P33
0
EEPROM clock output
24
P32
1/0
EEPROM address output, data input/output
25
P31
0
Open (not used)
26
P30
0
Open (not used)
27
P81
0
Open (not used)
28
P81
0
2000-Hz/500-Hz beep output
29
P03
I
Open (not used)
30
P02
I
Open (not used)
31
P01
I
Open (not used)
32
POO
I
EEPROM version switching (Open: 1-kbit EEPROM)
33
P13
I
PTT switch input
34
NC
-
+5V
35
P12
I
HOOK switch input
36
P11/INT1
I
Test data input (Low: Input start)
37
P10/INTO
I
Clone data input (High: Input start)
38
NC
-
+5V
39
Voo
-
+5V
40-43
P20- P23
0
Key scan data output (Output: Normally low)
44
NC
-
Open (not used)
3
Advertisement
