Troubleshooting and Testing
3-13
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
P51
P52
P53
P54
P55
P56
P57
P80
P81
P82
P83
P84
P85
P86
P87
P22
AIN7
P50
VEP
COM3
COM2
COM1
COM0
V3
V2
V1
C1
C0
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
IN
OUT
OUT
OUT
OUT
OUT
IN
IN
IN
Signal to Buzzer: Duration
Signal to sound buzzer: PWM
Signal coming from touch key.
When G1 line on key matrix is touched, a corresponding
signal out of P80-P87 is input into P53. When no key is touched, signal is held at “H” level.
Signal coming from touch key.
When G2 line on key matrix is touched, a corresponding
signal out of P80-P87 is input into P54. When no key is touched, signal is held at “H” level.
Signal coming from touch key.
When G3 line on key matrix is touched, a corresponding
signal out of P80-P87 is input into P55. When no key is touched, signal is held at “H” level.
Signal coming from touch key.
When G4 line on key matrix is touched, a corresponding
signal out of P80-P87 is input into P56. When no key is touched, signal is held at “H” level.
Signal coming from touch key.
When G5 line on key matrix is touched, a corresponding
signal out of P80-P87 is input into P57. When no key is touched, signal is held at “H” level.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P53-P57
and P80 terminal while one of G6 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P53-P57
and P81 terminal while one of G7 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P53-P57
and P82 terminal while one of G8 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P53-P57
and P83 terminal while one of G9 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P53-P57
and P84 terminal while one of G10 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P53-P57
and P85 terminal while one of G11 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P53-P57
and P86 terminal while one of G12 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P53-P57
and P87 terminal while one of G13 line keys on key matrix is touched.
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Pin# Signal I/O Description
“Lingering”: PWM still “ON”
while Duration is “OFF”
ON
ON
OFF
OFF
Buzzer
PWM
Duration
Summary of Contents for EI27MO45GSA
Page 2: ......
Page 32: ...Troubleshooting and Testing 3 14 Notes ...
Page 46: ...Wiring Diagrams 5 4 Notes ...
Page 52: ...Parts List 6 6 Notes ...
