Z80 Datasheet, PDF (224/330 Pages) Zilog, Inc. – Z80 CPU PERIPHERALS

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Z80 CPU
D7–D0
A15–A0
Address
Decoder
Port A Bus
A7
A6
A5
A4
Z80 PIO
A3
A2
A1
A0
B/A C/D CE
Figure 16. Control Mode Application
Spec. Test
Turn on Pwr.
Pwr. Fail Alm.
HALT
Temp. Alm.
HTRS. on
Press. Sys
Press. Alm.
Industrial
Processing
System
UM008101-0601
Parallel Input/Output