Table of Contents
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Classification Terminal
Power
Vcc
supply
GND
CVcc
Vtref
Oscillation X1
X2
OSC1
OSC2
Reset
RESET
Test
TEST
I/O port
P20
P24
P25
P26
P27
SCK1
P22
SO1
P17
P16
P15
P14
P13
P12
P11
P10
P50
P51
P52
P53
P54
P55
P56
P57
PA3
PA2
PA1
P60
P61
P62
P63
P64
Pin No.
Input/
Output
7
-
3
-
64
-
61
-
1
Input
2
Output
5
Input
4
Output
8
Input
6
Input
9
Output
13
Output
14
Output
15
Output
16
Input
10
Output
11
Output
12
Output
17
Input
18
Input
19
Output
20
Output
21
Output
22
Output
23
Output
24
Output
28
Input
29
Input
30
Input
31
Input
32
Input
33
Input
34
Input
35
Input
25
Output
26
Output
27
Output
36
Output
37
Output
38
Output
39
Output
40
Output
10
Power supply terminal
Ground terminal
Connect to the Vcc terminal
DTMF reference level voltage terminal / Connect
Vcc terminal
Input/Output terminal to the main oscillator.
Connect to the ceramic oscillator.(8MHz)
No use
No use
Reset terminal of MCU (Active Low)
No use
DTMF tone control
Handset tone control
SP-Phone tone control
Ringer tone control
Hook Switch
LCD serial clock
LCD write enable command
LCD data
Interrupt request from G/A (IC1)
Interrupt request from G/A (IC1)
Reset terminal of G/A (IC1) (Active Hi)
KEY communication output 1
KEY communication output 2
KEY communication output 3
KEY communication output 4
KEY communication output 5
KEY communication input 0
KEY communication input 1
KEY communication input 2
KEY communication input 3
KEY communication input 4
KEY communication input 5
KEY communication (HOLD key)
No use
W.OHCA control
Ringer tone vol. Control 1
Ringer tone vol. Control 2
Handset speaker mute control
Handset mic mute control
SP-Phone speaker mute control
Off-hook-monitor control
Handset power control
Function
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