Casio QT-2100 Service Manual

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

Casio QT-2100 Specifications

General

Brand	Casio
Model	QT-2100
Category	Cash Register
Language	English