Z8S180 Zilog., Z8S180 Datasheet - Page 178

• Manufacturer Part Number: Z8S180
• Description: ENHANCED Z180 MICROPROCESSOR
• Manufacturer: Zilog.

Timer Reload
Timer Data
TDE Flag
Register
Register
TIF Flag
RESET
Table 23. Timer Output Control
Figure 64 illustrates timer initialization, count down, and reload timing.
Figure 65 depicts timer output (A18/TOUT) timing.
Figure 64.
Timer Data Register
write (0004H)
TOC1
FFFFH
FFFFH 0003H
Timer Reload Register Write (0003H)
0
0
1
1
0004H
Timer Initialization, Count Down, and Reload Timing Diagram
TOC0
0
1
0
1
0003H 0002H 0001H 0000H 0003H 0002H 0001H 0000H 0003H
20
Write 1 to TDE
0 < + < 20
OUTPUT
Inhibited
Toggled
0
1
20
20
20
(A18/TOUT pin is selected as an
address output function.)
A18/TOUT pin is selected as a
PRT1 output function!
20
Reload
20
M PU Us e r M anual
20
Timer Control
Register Read
Timer Data Register Read
UM005001-ZMP0400
Z 8018x Fam il y
20
20
Reload
163