HS-80C85RH
Waveforms
(Continued)
T2
CLK
T2
THOLD
THOLD
T1
HOLD
tHDS
HLDA
tHDH
tHACK
tHABF
tHABE
BUS
(ADDRESS, CONTROLS)
FIGURE 5. HOLD
T1
CLK
tLCK
T2
TWAIT
T3
T3
tCA
A
8-15
ADDRESS
tAD
AD
0
-AD
7
tLL
ALE
tAL
RD/INTA
tAC
tARY
READY
NOTE 1: READY MUST REMAIN STABLE DURING SETUP AND HOLD TIMES.
tLC
tLRY
ADDRESS
tLA
tAFR
tLDR
tRD
tCC
tRDH
DATA IN
tCL
tRAE
tRYS tRYH
tRYS tRYH
FIGURE 6. READ OPERATION WITH WAIT CYCLE (TYPICAL) - SAME READY TIMING APPLIES TO WRITE
T1
T2
T3
T4
T5
T6
THOLD T1
T2
A8-15
A0-7
CALL INST.
BUS FLOATING
†
RD
INTR
INTR
tINH
tINS
HOLD
tHDH
tHDS
HLDA
tHACK
tHABF
tHABE
†
IO/M IS ALSO FLOATING DURING THIS TIME.
FIGURE 7. INTERRUPT AND HOLD
Spec Number
9
518054