Sharp ER-A770 Manual page 32

3) Pin description
Pin Signal In/
Symbol
No. name Out
1 /RES /RESET In
2 NMI NMI In
3 VSS GND In
4 D0 D0 I/O
5 D1 D1 I/O
6 D2 D2 I/O
7 D3 D3 I/O
8 D4 D4 I/O
9 D5 D5 I/O
10 D6 D6 I/O
11 D7 D7 I/O
12 D8 D8 I/O
13 D9 D9 I/O
14 D10 D10 I/O
15 D11 D11 I/O
16 D12 D12 I/O
17 D13 D13 I/O
18 D14 D14 I/O
19 D15 D15 I/O
20 VSS GND In
21 A0 A0 Out
22 A1 A1 Out
23 A2 A2 Out
24 A3 A3 Out
25 A4 A4 Out
26 A5 A5 Out
27 A6 A6 Out
28 A7 A7 Out
29 A8 A8 Out
30 A9 A9 Out
31 A10 A10 Out
32 A11 A11 Out
33 A12 A12 Out
34 A13 A13 Out
35 A14 A14 Out
36 A15 A15 Out
37 VSS GND In
38 A16 A16 Out
39 A17 A17 Out
40 A18 A18 Out
41 A19 A19 Out
42 A20 A20 Out
43 A21 A21 Out
44 A22 A22 Out
45 A23 A23 Out
46 VSS GND In
47 P30 /WAIT In
48 P31 /BACK Out
49 P32 /BREQ In
50 P33 DOPS In
51 P34 /DR0 Out
52 P35 /DR1 Out
53 P36 NC NC
54 P37 NC NC
55 VCC VCC In
56 P40 VCC In
57 P41 GND In
58 P42 GND In
Function
Reset signal
Non-maskable interrupt input
for SSP interrupt input.
GND
Data bus
Data bus
Data bus
Data bus
Data bus
Data bus
Data bus
Data bus
Data bus
Data bus
Data bus
Data bus
Data bus
Data bus
Data bus
Data bus
GND
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
GND
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
GND
Wait signal
Bus control request
acknowledge signal
Bus control request signal
Drawer open signal
Option drawer open signal
Option drawer open signal
NC
NC
+5V
+5V
GND
GND
Pin Signal In/
Symbol
No. name Out
59 P43 GND In
60 P44 MCRINT In
61 P45 GND In
62 P46 /SHEN In
63 P47 GND In
64 VSS GND In
65 P50 – Out
66 P51 – In
67 P52 – In
68 P53 – In
69 P54 – In
70 P55 NC Out
71 P56 – In
72 P57 /STOP Out
73 P60 /IPLON0 In
74 P61 /IPLON1 In
75 P62 GND In
76 P63 NORDY In
77 P64 FVPON Out
78 P65 BANK Out
79 P66 GND In
80 P67 GND In
81 VSS GND In
82 AVSS GND In
83 P70 GND In
84 P71 GND In
85 P72 GND In
86 P73 GND In
87 AVCC VCC In
88 VCC VCC In
89 /IRQ0 /IRQ0 In
90 /IRQ1 /IRQ1 In
91 /IRQ2 UASCK In
92 /IRQ3 SCKI Out
93 RXD1 /RCVDT2 In
94 TXD1 TXD2 Out
95 RXD2 RXDI In
96 TXD2 TXDI Out
97 VSS GND In
98 EXTAL EXTAL In
99 XTAL XTAL In
100 VSS GND In
101 X # Out
102 E NC NC
103 /AS /AS Out
104 RD /RD Out
105 /HWR /HWR Out
106 /LWR /LWR Out
107 /RFSH /RFSH Out
108 VCC VCC In
109 MD0 IPLON0 In
110 MD1 IPLON0 In
111 MD2 /IPLON0 In
112 /STBY VCC In
Function
GND
MCR interrupt signal
GND
CKDC interface shift enable
signal
GND
GND
/DTR2 : Data Terminal Ready2
/DSR2 : Data Set Ready2
/CTS2 : Clear To Send2
/DCD2 : Carriar Detect2
NC
/RTS2:Request To Send2
/CI2:Calling Indicator2
System reset output signal
From IPL SW of ER-A7RS
From IPL SW of ER-A770
GND
Flash Memory ready ("H" active)
Flash Memory write protect ("L"
active)
For IPL ROM
GND
GND
GND
GND
GND
GND
GND
GND
+5V
+5V
Interrupt signal 0
Interrupt signal 1
Synchronizing shift clock signal
for USART
CKDC interface synchronizing
shift clock
RXD signal for RS232
TXD signal for RS232
CKDC interface shift input data
CKDC interface shift output
data
GND
Crystal oscillator connection
19.6MHz
Crystal oscillator connection
19.6MHz
GND
System clock
NC
Address strobe
Read signal
Write signal (HIGH)
Write signal (LOW)
Refresh cycle signal
+5V
From IPL SW of ER-A7RS
From IPL SW of ER-A7RS
From IPL SW of ER-A7RS
+5V