Page 7
CPU (HD6437020U01X) Pin Description
No.
Signal
In/Out
Description
No.
Signal
In/Out
Description
1 AD0
In/Out
Data bus
51 (CS4)
Out
Chip select 4
2 AD1
In/Out
Data bus
52 (RAS)
Out
Low address strobe
3 AD2
In/Out
Data bus
52 (CS5)
Out
Chip select 5
4 Vss
In
Gnd
53 (CS6)
Out
Chip select 6
5 AD3
In/Out
Data bus
54 (WAIT)
In
Wait
6 AD4
In/Out
Data bus
55 (WR)
Out
Write
7 AD5
In/Out
Data bus
56 (PA5)
Out
Gnd
8 AD6
In/Out
Data bus
57 (RD)
Out
Read
9 AD7
In/Out
Data bus
58 (BACK)
Out
Acknowledge of Bus right Request
10 AD8
In/Out
Data bus
59 Vss
In
Gnd
11 AD9
In/Out
Data bus
60 (BREQ)
In
Bus right Request
12 AD10
In/Out
Data bus
61 (IRQOUT)
Out
IRQ Request
13 Vcc
In
Power
62 DPL
In/Out
Parity for D7 ~ D0
14 AD11
In/Out
Data bus
63 Vcc
In
Power
15 Vss
In
Gnd
64 DPH
In/Out
Parity for D15 ~ D8
16 AD12
In/Out
Data bus
65 (IRQ0)
In
IRQ Request
17 AD13
In/Out
Data bus
66 (IRQ1)
In
IRQ Request
18 AD14
In/Out
Data bus
67 (IRQ2)
In
IRQ Request
19 AD15
In/Out
Data bus
68 (IRQ3)
In
IRQ Request
20 A0
Out
Address bus
69 CK
Out
System clock
21 A1
Out
Address bus
70 Vss
In
Gnd
22 A2
Out
Address bus
71 EXTAL
In
Exterior clock
23 A3
Out
Address bus
72 XTAL
In
Crystal oscillator
24 Vss
In
Gnd
73 Vcc
In
Power
25 A4
Out
Address bus
75 (WDTOVF)
Out
Watch dog timer over flow
26 A5
Out
Address bus
76 (RES)
In
Reset
27 A6
Out
Address bus
77 MD0
In
Mode
28 A7
Out
Address bus
78 MD1
In
Mode
29 A8
Out
Address bus
79 MD2
In
Mode
30 A9
Out
Address bus
80 Vcc
In
Power
31 A10
Out
Address bus
81 Vss
In
Gnd
32 Vss
In
Gnd
82 Vss
In
Gnd
33 A11
Out
Address bus
83 TIOCA2
In/Out
In/Out compare (Ch 2)
34 A12
Out
Address bus
84 TCOCB2
In/Out
In/Out compare (Ch 2)
35 A13
Out
Address bus
85 TIOCA3
In/Out
In/Out compare (Ch 3)
36 A14
Out
Address bus
86 TCOCB3
In/Out
In/Out compare (Ch 3)
37 A15
Out
Address bus
87 TIOCA4
In/Out
In/Out compare (Ch 4)
38 Vcc
In
Power
88 Vcc
In
Power
39 A16
Out
Address bus
89 TCOCB4
In/Out
In/Out compare (Ch 4)
40 A17
Out
Address bus
90 TCLKC
In
ITU Timer clock
41 Vss
In
Gnd
91 TCLKD
In
ITU Timer clock
42 A18
Out
Address bus
92 Vss
In
Gnd
43 A19
Out
Address bus
93 RxD0
In
Receiving data
44 A20
Out
Address bus
94 TxD0
Out
Sending data
45 A21
Out
Address bus
95 RxD1
In
Receiving data
46 (CS0)
Out
Chip select 0
96 TxD1
Out
Sending data
47 (CS1)
Out
Chip select 1
97 (IRQ4)
In
IRQ Request
48 (CS2)
Out
Chip select 2
98 (IRQ5)
In
IRQ Request
49 (CS3)
Out
Chip select 3
99 (IRQ6)
In
IRQ Request
50 Vss
In
Gnd
100 (IRQ7)
In
IRQ Request
Summary of Contents for DT-700
Page 6: ...Page 4 AC Adaptors DT 9020ADOG 230 V DT 9020ADPU 120 V 2 I O box DT 760 IOE PX 905...
Page 20: ...Page 18 9 IC Data...
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