Sharp ER-A750 Service Manual page 53

4) Pin description
Pin Signal
Symbol In/Out
No. name
1 VSS GND
2 VDD VCC
3 IOCS LCDC
4 IOWR WR
5 IORD RD
6 MEMCS RASV
7 MEMWR WR
8 MEMRD RD
9 READY LCDWT Out
10 MPUCLK #
11 RESET RESET
12 MPUSEL GND
13 BHE VCC
14 AB0 A0
15 AB1 A1
16 AB2 A2
17 AB3 A3
18 AB4 A4
19 AB5 A5
20 AB6 A6
21 AB7 A7
22 AB8 A8
23 AB9 A9
24 AB10 A10
25 AB11 A11
26 AB12 A12
27 AB13 A13
28 AB14 A14
29 AB15 A15
30 DB0 D0 In/Out Data bus
31 DB1 D1 In/Out Data bus
32 DB2 D2 In/Out Data bus
33 DB3 D3 In/Out Data bus
34 DB4 D4 In/Out Data bus
35 DB5 D5 In/Out Data bus
36 DB6 D6 In/Out Data bus
37 DB7 D7 In/Out Data bus
38 DB8 GND
39 DB9 GND
40 DB10 GND
41 DB11 GND
42 DB12 GND
43 DB13 GND
44 DB14 GND
45 DB15 GND
46 VWE VWE Out
47 VA0 VA0 Out
48 VA1 VA1 Out
49 VA2 VA2 Out
50 VA3 VA3 Out
51 VA4 VA4 Out
Function
— GND
— +5V
Chip select signal for control
In
register
Write strobe signal for control
In
register
Read strobe signal for control
In
register
In VRAM chip select signal
In VRAM write strobe signal
In VRAM read strobe signal
Ready signal
In Clock signal
In Reset signal
In GND
In +5V
In Address bus
In Address bus
In Address bus
In Address bus
In Address bus
In Address bus
In Address bus
In Address bus
In Address bus
In Address bus
In Address bus
In Address bus
In Address bus
In Address bus
In Address bus
In Address bus
— GND
— GND
— GND
— GND
— GND
— GND
— GND
— GND
VRAM write strobe signal
VRAM address bus
VRAM address bus
VRAM address bus
VRAM address bus
VRAM address bus
Pin Signal
Symbol
No. name
52 VA5 VA5
53 VA6 VA6
54 VA7 VA7
55 VA8 VA8
56 VA9 VA9
57 VA10 VA10
58 VA11 VA11
59 VA12 VA12
60 VA13 VA13
61 VA14 VA14
62 VA15 NC
63 VCS4 NC
64 VCS3 NC
65 VCS2 NC
66 VCS1 VCS1
67 VCS0 VCS0
68 VD0 VD0
69 VD1 VD1
70 VD2 VD2
71 VD3 VD3
72 VD4 VD4
73 VD5 VD5
74 VD6 VD6
75 VD7 VD7
76 VD8 VCC
77 VD9 VCC
78 VD10 VCC
79 VDD VCC
80 VSS VCC
81 VD11 VCC
82 VD12 VCC
83 VD13 VCC
84 VD14 VCC
85 VD15 VCC
86 LCDENB LCDENB
87 XSCL XSCL
88 LP LP
89 WF WF
90 YD YD
91 UD0 UD0
92 UD1 UD1
93 UD2 UD2
94 UD3 UD3
95 LD0 NC
96 LD1 NC
97 LD2 NC
98 LD3 NC
99 OSC1 OSC1
100 OSC2 OSC2
7 – 23
In/Out Function
Out VRAM address bus
Out VRAM address bus
Out VRAM address bus
Out VRAM address bus
Out VRAM address bus
Out VRAM address bus
Out VRAM address bus
Out VRAM address bus
Out VRAM address bus
Out VRAM address bus
— NC
— NC
— NC
— NC
Out VRAM chip select signal
Out VRAM chip select signal
In/Out VRAM data bus
In/Out VRAM data bus
In/Out VRAM data bus
In/Out VRAM data bus
In/Out VRAM data bus
In/Out VRAM data bus
In/Out VRAM data bus
In/Out VRAM data bus
— +5V
— +5V
— +5V
— +5V
— +5V
— +5V
— +5V
— +5V
— +5V
— +5V
Out LCD control signal
Clock for display data
Out
transmission
Out Display data latch pulse signal
Frame signal (Liquid crystal
Out
alternating current signal)
Out Scanning line start signal
Out Screen display data
Out Screen display data
Out Screen display data
Out Screen display data
— NC
— NC
— NC
— NC
In System clock
Out System clock