Table of Contents
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Pin
Descriptiojn
70
P0.1
71
P0.0
72
PX.2
73
PX.1
74
(NO USE)
75
(NO USE)
76
R1
77
(NO USE)
78
VDD
79
VSS
80
(NO USE)
81
TONE
82
(NO USE)
83
(NO USE)
84
(NO USE)
85
(NO USE)
86
(NO USE)
87
(NO USE)
88
VDD
89
VSS
90
(NO USE)
91
(NO USE)
92
(NO USE)
93
(NO USE)
94
(NO USE)
95
MA5
96
(NO USE)
97
MA3
98
VDD
99
VSS
100
MA2
101
MA1
102
MA0
103
FRDY
104
MD4
105
MD2
I/O
Hi
DO
-
DO
No Key
DO
-
DO
-
DO
-
DO
-
DO
LED ON
DO
-
-
-
-
-
DO
-
DI
-
DO
-
DO
-
DO
-
DO
-
DO
-
DO
-
-
-
-
-
DO
-
DO
-
DO
-
DO
-
DO
-
DO/I
-
DO
-
DO/I
-
-
-
-
-
DO/I
-
DO/I
-
DO/I
-
DO
-
DO
-
DO
-
67
Hi-z
Low
-
-
-
Key
-
Write IC4
-
Read IC4
-
-
-
-
-
LED OFF
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Remarks
for Flash
Memory
for Key
for Flash
Memory
for Flash
Memory
-
-
-
-
-
-
-
Ring Det
-
-
-
-
-
-
-
-
-
-
-
-
-
for Voice Down
Load
-
for Voice Down
Load
-
-
for Voice Down
Load
for Voice Down
Load
for Voice Down
Load
for Flash
Memory
for Flash
Memory
for Flash
Memory
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Troubleshooting
