Casio QT-2100 Service Manual page 25

5-5-3. Pin description
PIN NO PIN NAME
1 P120
2 P121
3 P122
4 P123
5 P124
6 P125
7 P126
8 P127
9 VDD
10 X2
11 X1
12 VSS
13 XT2
14 XT1
15 RESET
16 P00
17 P01
18 P02
19 P03
20 P04
21 P05
22 P06
23 AVDD
24 AVREF0
25 P10
26 P11
27 P12
28 P13
29 P14
30 P15
31 P16
32 P17
33 AVSS
34 P130
35 P131
36 AVREF1
37 P70
38 P71
39 P72
40 P20
41 P21
42 P22
43 P23
44 P24
45 P25
46 P26
47 P27
48 P80
49 P81
50 P82
I / O D E S C R I P T I O N
I KEY INPUT
I KEY INPUT
I KEY INPUT
I KEY INPUT
I KEY INPUT
I KEY INPUT
I KEY INPUT
I KEY INPUT
VCC VCC
I/O CLOCK 12.5MHz
I/O CLOCK 12.5MHz
GND GND
GND GND
GND GND
O RESET
I MCR CLOCK1
I MCR CLOCK2
I MCR CARD LOAD1
I MCR CARD LOAD2
I CTS
I KEY INPUT (DALLAS KEY)
I PWD
VCC VCC
VCC VCC
I KEY INPUT
I KEY INPUT
I KEY INPUT
I KEY INPUT
I KEY INPUT
I KEY INPUT
I KEY INPUT
I KEY INPUT
GND GND
O DRAWER DRIVE1
O DRAWER2 DRIVE2
VCC VCC
VCC VCC
I TxD
O BACKLIGHT ON/OFF
I RxD
O TxD
O KEY OUTPUT (DALLAS KEY)
O LCD
O BUZZER
VCC VCC
O RTS
O DTR
O ADDRESS (A0)
O ADDRESS (A1)
O ADDRESS (A2)
— 23 —
PIN NO PIN NAME
51 P83
52 P84
53 P85
54 P86
55 P87
56 P40
57 P41
58 P42
59 P43
60 P44
61 P45
62 P46
63 P47
64 P50
65 P51
66 P52
67 P53
68 P54
69 P55
70 P56
71 P57
72 VSS
73 P60
74 P61
75 P62
76 P63
77 P64
78 P65
79 P66
80 P67 Not used Not used
81 VDD
82 P100
83 P101
84 P102
85 P103
86 P30
87 P31
88 P32
89 P33
90 P34
91 P35
92 P36
93 P37
94 TEST
95 P90
96 P91
97 P92
98 P93
99 P94
100 P95
I / O D E S C R I P T I O N
O ADDRESS (A3)
O ADDRESS (A4)
O ADDRESS (A5)
O ADDRESS (A6)
O ADDRESS (A7)
I/O DATA (D0)
I/O DATA (D1)
I/O DATA (D2)
I/O DATA (D3)
I/O DATA (D4)
I/O DATA (D5)
I/O DATA (D6)
I/O DATA (D7)
O ADDRESS (A8)
O ADDRESS (A9)
O ADDRESS (A10)
O ADDRESS (A11)
O ADDRESS (A12)
O ADDRESS (A13)
O ADDRESS (A14)
O ADDRESS (A15)
GND GND
O ADDRESS (A16)
O ADDRESS (A17)
O ADDRESS (A18)
O ADDRESS (A19)
O READ signal
O WRITE signal
I WAIT signal
O VDD
O KEY OUTPUT (Common)
O KEY OUTPUT (Common)
O KEY OUTPUT (Common)
O KEY OUTPUT (Common)
O KEY OUTPUT (Common)
O KEY OUTPUT (Common)
O KEY OUTPUT (Common)
O KEY OUTPUT (Common)
O KEY OUTPUT (Common)
O KEY OUTPUT (Common)
O KEY OUTPUT (Common)
O KEY OUTPUT (Common)
GND GND
I DRAWER STATUS1
I DRAWER STATUS2
I MENU SHEET STATUS
I MENU SHEET 0
O MENU SHEET 1
O MENU SHEET 2