Z80 Datasheet, PDF (241/330 Pages) Zilog, Inc. – Z80 CPU PERIPHERALS

Z80 CPU Peripherals
User Manual
221
IEI
IEO
M1
+5V
W/RDYA
SYNCA
RxDA
RxCA
TxCA
TxDA
N/C
6 5 4 3 2 1 44 43 42 41 40
7
39
8
38
9
37
10
36
11
12
Z80
35
34
13
SIO/4
33
14
32
15
31
16
30
17
29
18 19 20 21 22 23 24 25 26 27 28
B/A
C/D
RD
GND
W/RDYB
SYNCB
RxDB
RxCB
TxCB
TxDB
NC
Figure 108. Z80 SIO/4 Pin Assignments
UM008101-0601
Serial Input/Output