Z84C90_12 Datasheet, PDF (42/56 Pages) Zilog, Inc. – KIO Serial/Parallel Counter/Timer

Z84C90 KIO Serial/Parallel Counter/Timer
Product Specification
35
Clock
IORQ
RD
Port C
Input
Port C
Output
RDY
STB
Mode 0
Mode 1
Mode 2
34
35
30
24
25
23
26
27
28
29
8
31
Mode 3
INT
32
33
Figure 39. Port I/O Read/Write Timing
Figure 40 shows the serial timing of the Z84C90 KIO Peripheral’s I/O block.
PS011804-0612
DC Characteristics