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Z80 Datasheet(PDF) 152 Page - Zilog, Inc.

Part # Z80
Description  Z80 CPU PERIPHERALS
PDF  330 Pages
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Manufacturer  ZILOG [Zilog, Inc.]
Direct Link  http://www.zilog.com
Logo ZILOG - Zilog, Inc.

Z80 Datasheet(HTML) 152 Page - Zilog, Inc.

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<%27 2GTKRJGTCNU
7UGT /CPWCN
UM008101-0601
Direct Memory Access

Figure 50.
CE/WAIT Multiplexer
Figure 51.
Simultaneous Transfer Multiplexer
I1
I0
SEL
1/4
74LS157
Y
DMA
CE/WAIT
BUSACK
CE (From Decoder)
WAIT (From Peripheral or Memory Logic)
+5V
IOWR IORD MWR MRD
BUSACK or BAI-BAO
RD (from DMA)
IORQ (from DMA)
Y4
Y3
Y1
SEL
74LS257
OE
Y2
0 1 000
111



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