Sharp ER-A750 Service Manual page 37

3) Pin description
Pin Signal
Symbol
No. name
1 RF Nu
2 JF Nu
3 PCUT Nu
4 FCUT Nu
5 VF Nu
6 STAMP Nu
7 SLF Nu
8 SLRS Nu
9 SLPMTD Nu
10 RES RES
11 TRG Nu
12 TRG Nu
13 INT0 POFF
14 INT1 KRQ
15 HTS1 HTS
16 SCK1 SCK
17 STH1 STH
18 RASV RASV
19 Nu Nu
20 VCC VCC
21 VSS GND
22 INTMCR INTMCR
23 VRESC VRESC
24 SLTMG GND
25 SLRST GND
26 AS AS
27 RD RD
28 WR WR
29 PHAI #
30 SDT7 Nu
31 SDT6 Nu
32 SDT5 Nu
33 VSS GND
34 SDT4 Nu
35 SDT3 Nu
36 SDT2 Nu
37 SDT1 Nu
38 D0 D0
39 D1 D1
40 D2 D2
41 D3 D3
42 VSS GND
43 D4 D4
44 D5 D5
45 D6 D6
46 D7 D7
47 SSPRQ NMI
48 RESET RESET
49 INT2 VCC
50 INT3 VCC
51 RXDI RXDI
52 TXDI TXDI
In/
Function
Out
— Nu
— Nu
— Nu
— Nu
— Nu
— Nu
— Nu
— Nu
— Nu
Out Peripheral output reset
— Nu
— Nu
In Power off signal input
Interrupt signal (Key
In
interrupt request)
Out 8 bit serial port output
Out Serial port shift clock output
In 8 bit serial port input
Out Chip select
— Nu
— +5V
— GND
Out Interrupt signal (MCR)
Turns active when reset and
In
power down is met
— GND
— GND
In Address strobe
In Read strobe
In Write strobe
In ( ) System clock (9.83MHz)
— Nu
— Nu
— Nu
— GND
— Nu
— Nu
— Nu
— Nu
I/O Data bus
I/O Data bus
I/O Data bus
I/O Data bus
— GND
I/O Data bus
I/O Data bus
I/O Data bus
I/O Data bus
Out SSP interrupt request to CPU
In MPCA reset
— +5V
— +5V
8 bit serial port output to
Out
CPU
8 bit serial port input from
In
CPU
Pin Signal
Symbol
No. name
53 SCK1 SCK1
54 IRQ0 IRQ0
55 A0 A0
56 A1 A1
57 A2 A2
58 A3 A3
59 A4 A4
60 A5 A5
61 VSS GND
62 VCC VCC
63 A6 A6
64 A7 A7
65 A8 A8
66 A9 A9
67 A10 A10
68 A11 A11
69 A12 A12
70 A13 A13
71 A14 A14
72 A15 A15
73 A16 A16
74 A17 A17
75 A18 A18
76 A19 A19
77 A20 A20
78 A21 A21
79 A22 A22
80 LCDC LCDC
81 A23 A23
82 TRGI GND
83 PTMG Nu
84 PRST Nu
85 INT4 VCC
86 IPLON IPLON0
87 MD1 GND
88 MD0 GND
89 TEST VCC
90 MA15 MA15
91 MA18 Nu
92 MA19 Nu
93 RCVRDY1 MCRRDY1
94 RCVRDY2 MCRRDY2
95 RCO Nu
96 IRTX IRTX
97 UASCK UASCK
98 UARX UARX
99 UATX UATX
100 VCC VCC
101 VSS GND
102 IRRX IRDA
103 RCI GND
104 PHAI PHAI
105 DAX2 PHAI
106 MCR1 MCR1
107 MCR2 MCR2
7 – 7
In/
Function
Out
Serial port shift clock input
In
from CPU
Out Interrput request to CPU
In Address bus
In Address bus
In Address bus
In Address bus
In Address bus
In Address bus
— GND
— +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
In Address bus
Out LCDC chip select signal
In Address bus
In GND
— Nu
— Nu
— +5V
In To option connector
— GND
— GND
— +5V
Out Image address 15
— Nu
— Nu
In
In
— Nu
Out I/R output for LED
Out I/R serial data shift clock
Out I/R serial data for CPU
In I/R serial data from CPU
— +5V
— GND
In I/R input from IR unit
— GND
In System clock (7.3728MHz)
In System clock (7.3728MHz)
Out
Out