Z84C90 Datasheet, PDF (16/31 Pages) Zilog, Inc. – KIO Serial/Parallel Counter Timer

Z84C90
KIO Serial/Parallel Counter Timer
11
Data Bus
Port C
PC0`PC7
Dir.
Ctrl.
Figure 6. PIA Block Diagram
Data
8
Control
6
CPU
Bus
I/O
Internal Bus
Internal
Control
Logic
INT
Interrupt
Logic
IE1
IE0
Counter/
Timer
Logic
4 ZC/TO
4 CLK/TRG
Figure 7. CTC Block Diagram
Reset
PS011802-0902