ZiLOG Z8 Technical Manual page 135

3047-023. 3047-024
R245 PREO
Prescaler 0 Register
(% F5; Write Only)
~ COUNTMODE
o
=
To SINGLE·PASS
1 =
To MODULO·N
RESERVED
PRESCALER MODULO
L-------(RANGE: 1-64 DECIMAL
01-00 HEX)
figure 11-21. Prescaler 0 Reset
R241 TMR
Timer Mode Register
(% F1; Read/Write)
10101010101010101
TOUT MODES
I
TOUT OFF
=
00
To OUT
=
01
~ L
0
=
NO FUNCTION
1
=
LOAD To
T1 OUT
=
10
INTERNAL CLOCK OUT
=
11
TIN MODES
EXTERNAL CLOCK INPUT
=
00
GATE INPUT
=
01
TRIGGER INPUT
=
10
(NON·RETRIGGERABLE)
TRIGGER INPUT
=
11
(RETRIGGERABLE)
o
=
DISABLE To COUNT
1
=
ENABLE To COUNT
o
=
NO FUNCTION
1
=
LOAD T1
'--_ _ _ 0
=
DISABLE T1 COUNT
1 =
ENABLE T1 COUNT
Figure 11-22.
T~r
Hode Register Reset
Counter/Timers
11-9