Sharp ER-A750 Service Manual page 34

3) Pin description
Pin Signal
Symbol
No. name
1 RES RESET
2 NMi NMi
3 VSS NU
4 P10 IPLON0
5 P11 PNLSNS In IPLON signal for servicing
6 P12 IPLON2
7 P13 NORDY
8 P14 FVPON
9 P15 BKLT
10 P16 Nu
11 P17 MVDT
12 D8 D0
13 D9 D1
14 D10 D2
15 D11 D3
16 D12 D4
17 D13 D5
18 D14 D6
19 D15 D7
20 VSS NU
21 A0 A0
22 A1 A1
23 A2 A2
24 A3 A3
25 A4 A4
26 A5 A5
27 A6 A6
28 A7 A7
29 A8 A8
30 A9 A9
31 A10 A10
32 A11 A11
33 A12 A12
34 A13 A13
35 A14 A14
36 A15 A15
37 VSS NU
38 A16 A16
39 A17 A17
40 A18 A18
41 A19 A19
42 A20 A20
43 A21 A21
44 A22 A22
45 A23 A23
46 VSS NU
47 P30 WAIT
48 P31 BACK
49 P32 BREQ
50 P33 DOPS
51 P34 DR0
52 P35 DR1
53 P36 NU
54 P37 NU
In/
Function
Out
I/O Reset input
Non-maskable interrupt input for
In
SSP interrupt input.
In GND
IPLON signal for factory setting
In
(from expansion I/O port)
LCD sensing signal at main
In
PWB side
In Flash memory RY/BY # signal
Flash memory write protect
Out
signal output
Out Backlight control signal
In GND
In Memory version detect
I/O Data bus
I/O Data bus
I/O Data bus
I/O Data bus
I/O Data bus
I/O Data bus
I/O Data bus
I/O Data bus
In GND
Out Address bus
Out Address bus
Out Address bus
Out Address bus
Out Address bus
Out Address bus
Out Address bus
Out Address bus
Out Address bus
Out Address bus
Out Address bus
Out Address bus
Out Address bus
Out Address bus
Out Address bus
Out Address bus
In GND
Out Address bus
Out Address bus
Out Address bus
Out Address bus
Out Address bus
Out Address bus
Out Address bus
Out Address bus
In GND
In Wait signal
Out Bus control request acknowledge
In Bus control request
In Drawer open signal
Out Option drawer open signal
Out Remote drawer No.1 open signal
Out NU
Out NU
Pin Signal
Symbol
No. name
55 VCC VCC
56 P40 VCC
57 P41 NU
58 P42 NU
59 P43 NU
60 FTi1/P44 INTMCR
61 P45 NU
62 FTi2/P46 SHEN
63 P47 NU
64 VSS VSS
65 P50 NU
66 P51 NU
67 P52 NU
68 P53 NU
69 P54 NU
70 P55 NU
71 P56 NU
72 P57 STOP
73 P60 NU
74 P61 NU
75 P62 NU
76 P63 NU
77 P64 NU
78 P65 NU
79 P66 NU
80 P67 NU
81 VSS NU
82 AVSS NU
83 P70 NU
84 P71 NU
85 P72 NU
86 P73 NU
87 AVCC AVCC
88 VCC VCC
89 IRQ0 IRQ0
90 IRQ1 IRQ1
91 SCK1/IRQ2 UASCK
92 SCK2 SCKi
93 RXD1 UARX
94 TXD1 UATX
95 RXD2 RXDi
96 TXD2 TXDi
97 VSS NU
89 EXTAL EXTAL
99 XTAL XTAL
100 VSS NU
101 X #
102 E NU
103 AS AS
104 RD RD
105 HWR WR
106 LWR LWR
107 RFSH RFSH
108 VCC VCC
109 MD0 MD0
110 MD1 MD1
7 – 4
In/
Function
Out
In +5V
In +5V
In GND
In GND
In GND
In MCR interrupt signal
In GND
CKDC Interface shift enable
In
signal
In GND
In GND
Out GND
Out GND
Out GND
In GND
Out GND
In GND
Out GND
Out System reset output. Normally
Out GND
In GND
In GND
In GND
Out GND
Out GND
In GND
In GND
In GND
In GND
In GND
In GND
In GND
In GND
In +5V
In +5V
In Interrupt signal 0
In Interrupt signal 1
Synchronizing shift lock signal
In
for IR
In CKDC Interface sync shift clock
In RXD signal for IR
Out TXD signal for IR
In CKDC Interface shift input data
Out CKDC Interface shift output data
In GND
In Crystal oscillator connection
In Crystal oscillator connection
In GND
Out System clock
Out Nu
Out Address strobe
Out Read
Out Write
Out Nu
Out Refresh cycle
In +5V
In +5V (MODE 3)
In +5V (MODE 3)