Z80C30 Datasheet, PDF (81/96 Pages) Zilog, Inc. – CMOS SCC SERIAL COMMUNICATIONS CONTROLLER

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AS
4
CS0
7
CS1
INTACK
7
R/W
Read
R/W
Write
DS
AD7–AD0
Write
15
AD7–AD0
Read
15
W/REQ
Wait
W/REQ
Request
DTR/REQ
Request
4
8
9
12
12
16
17
16
22
24
13
19
21
25
26
INT
PCLK
40
41
42
44
43
44
2
6
14
10
10
18
20
23
27
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36