Z86E3016PSG Datasheet, PDF (151/348 Pages) Zilog, Inc. – Z86E3016PSG

Z8 CPU
User Manual
133
R242 T1
Counter/Timer 1 Register
(%F2; Write/Read Only)
R244 T0
Counter/Timer 0 Register
(%F4; Write/Read Only)
UUUUUUUU
Initial value when written
(Range 1–256 decimal, 01–00 HEX)
current value when read
Figure 86. Counter/Timer Reset
T_IN is set for External Clock mode, and the T_OUT mode is off. Figures 87
through 89 show the binary reset values of the Prescaler, Counter/Timer,
and Timer Mode registers.
R243 PRE1
PRESCALER 1 REGISTER
(%F3; WRITE-ONLY)
UUUUUU0 0
COUNT MODE
0 = T₁ SINGLE PASS
1 = T₁ MODULO-N
CLOCK SOURCE
1 = T₁ INTERNAL
0 = T₁ EXTERNAL (T_IN)
PRESCALER MODULO
(RANGE: 1–64 DECIMAL
01–00 HEX)
Figure 87. Prescaler 1 Register Reset
UM001602-0904
Counters and Timers