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| Z84C90 Datasheet, PDF (7/31 Pages) Zilog, Inc. – KIO Serial/Parallel Counter Timer | |||
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Z84C90
KIO Serial/Parallel Counter Timer
2
OSC
XTAL1
XTAL0
CLKOUT
Oscillator
D0-D7
A0-A3
CS
MI
RD
IORQ
RESET
CLK
Bus
Interface
and
Control
INT
Interrupt
IE1
Control
IE0
Figure 1. KIO Block Diagram
PIO
PIA/
MUX
SIO
CTC
PA0-PA7
ARDY
ASTB
PB0-PB7
BRDY
BSTB
PC0-PCV
RXDA
RXCA
TXDA
TXCA
CTSA
DCDA
RXDB
RXCB
TXDB
TXCB
CTSB
DCDB
ZC/TO0
CLK/TRG0
ZC/TO1
CLK/TRG1
ZC/TO2
CLK/TRG2
ZC/TO3
CLK/TRG3
PS011802-0902
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