Sharp XE-A102 - Reading and Resetting Sales Data; Quick Start Operations; Abbreviations and Terminology

XE-A102 HARDWARE DESCRIPTION
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4. CPU PORT TABLE
No. PIN Name Signal Name Description Output/Input Initial state When STBY
1 P50/A8 RWND REWIND MOTOR O L O/L
2 P51/A9 DR To DRAWER O L O/L
3 P52/A10 SA2 DISPLAY SEGMENT O L O/L
4 P53/A11 SB2 DISPLAY SEGMENT O L O/L
5 P54/A12 SC2 DISPLAY SEGMENT O L O/L
6 P55/A13 SD2 DISPLAY SEGMENT O L O/L
7 P56/A14 SE2 DISPLAY SEGMENT O L O/L
8 P57/A15 SF2 DISPLAY SEGMENT O L O/L
9 Vss0 GND
10 Vdd0 VDD
11 P30 ST1- DISPLAY STROBE N-Ch O.D. O H I
12 P31 ST2- DISPLAY STROBE N-Ch O.D. O H I
13 P32 ST3- DISPLAY STROBE N-Ch O.D. O H I
14 P33 ST4- DISPLAY STROBE N-Ch O.D. O H I
15 P34/SI31 ST5 DISPLAY STROBE (H ACTIVE) O L O/L
16 P35/SO31 NU (GND via 56k) I I
17 P36/SCK31- NU (GND via 56k) I I
18 P20/SI30 SA1 DISPLAY SEGMENT O L O/L
19 P21/SO30 SB1 DISPLAY SEGMENT O L O/L
20 P22/SCK30- SC1 DISPLAY SEGMENT O L O/L
21 P23/RXD0 SD1 DISPLAY SEGMENT O L O/L
22 P24/TXD0 SE1 DISPLAY SEGMENT O L O/L
23 P25/ASCK0 SF1 DISPLAY SEGMENT O L O/L
24 Vdd1 VDD
25 Avss GND
26 P17/ANI7 VBAT BATTERY voltage I I
27 P16/ANI6 NU RESERVE FOR KEY RETURN I I
28 P15/ANI5 KR6 KEY RETURN I I
29 P14/ANI4 KR5 KEY RETURN I I
30 P13/ANI3 KR4 KEY RETURN I I
31 P12/ANI2 KR3 KEY RETURN I I
32 P11/ANI1 KR2 KEY RETURN I I
33 P10/ANI0 KR1 KEY RETURN I I
34 Avref VCC
35 Avdd VDD
36 RESET- RESET-
37 XT2 XT2 32.768Khz Xtal
38 XT1 XT1 32.768Khz Xtal
39 IC/VPP GND
40 X2 X2 SYSTEM CLOCK
41 X1 X1 SYSTEM CLOCK
42 Vss1 GND
43 P00/INTP0 /POF POWER OFF I I
44 P01/INTP1 T From PRINTER I I
45 P02/INTP2 t From PRINTER I I
46 P03/INTP3/ADTRG R From PRINTER I I
47 P70/TI00/TO0 SG1 DISPLAY SEGMENT O L O/L
48 P71/TI01 SDP1 DISPLAY SEGMENT O L O/L
49 P72/TI50/TO50 SG2 DISPLAY SEGMENT O L O/L
50 P73/TI51/TO51 SDP2 DISPLAY SEGMENT O L O/L
51
P74/PCL
NU O L O/L
52 P75/BUZ BUZ BUZZER O L O/L
53 P64/RD- MTR To PRINTER O L O/L
54 P65/WR- TRG To PRINTER O L O/L
55 P66/WAIT- MSL1 MODEL SELECT1 I I
56 P67/ASTB MSL2 MODEL SELECT2 I I
57 P40/AD0 KST1 KEY STROBE O L O/L
58 P41/AD1 KST2 KEY STROBE O L O/L
59 P42/AD2 KST3 KEY STROBE O L O/L
60 P43/AD3 KST4 KEY STROBE O L O/L
61 P44/AD4 KST5 KEY STROBE O L O/L
62 P45/AD5 KST6 KEY STROBE O L O/L
63 P46/AD6 KST7 KEY STROBE O L O/L
64 P47/AD7 KST8 KEY STROBE O L O/L