8
HS-81C55RH, HS-81C56RH
Waveforms
(Continued)
RD
INPUT
DATA BUS
tPR
tRP
BASIC INPUT
BASIC INPUT
RD
INPUT
DATA BUS
tWP
RELOAD COUNTER CLR
LOAD COUNTER CLR
TIMER OUTPUT COUNTDOWN FROM 5 TO 1
2
1
tF
5
4
3
2
1
5
TIMER IN
TIMER OUT
(PULSE)
TIMER OUT
(SQUARE WAVE)
(NOTE 1)
(NOTE 1)
tR
t2
t1
tCYC
tTL
tTH
tTH
tTL
NOTE: THE TIMER OUTPUT IS PERIODIC IF IN AN AUTOMATIC
RELOAD MODE (M, MODE BIT = 1)
Spec Number
518056
