Ac Electrical Specifications - Internal Master Internal Read/Write Cycles; Ac Electrical Specifications - Chip-Select Timing Internal Master - Motorola MC68302 User Manual

6.11 AC ELECTRICAL SPECIFICATIONS - INTERNAL MASTER
INTERNAL READ/WRITE CYCLES
(see Figure 6-9)
16 MHz
Num. Characteristic Symbol
Min Max
140 Clock High to IAC High
tCHIAH
-
40
141 Clock Low to IAC Low
tcuAL
-
40
142
Clock High to DTACK Low (0 Wait State)
tCHDTL
-
45
143
Clock Low to DTACK High
tcLDTH
-
40
144 Clock High to Data Out Valid
tcLDOV
-
30
145
AS High to Data Out Hold Time
tASHDOH
0
-
6.12 AC ELECTRICAL SPECIFICATIONS - CHIP-SELECT TIMING
INTERNAL MASTER
(see Figure 6-10)
16 MHz
Num. Characteristic Symbol
Min Max
150
Clock High to CS, IACK Low
tCHCSIAKL
-
40
151
Clock Low to CS, IACK High
tCLCSIAKH
-
40
152
CS Width Negated
tcsH
60
-
153 Clock High to DTACK Low (0 Wait State)
tCHDTKL
-
45
154 Clock Low to DTACK Low (1-6 Wait States)
tcLDTKL
-
30
155 Clock Low to DTACK High
tcLDTKH
-
40
156 Clock High to SERR Low
tcHBERL
-
40
157 Clock Low to BERR High Impedance
tcLBERH
-
40
158 DTACK High to DTACK High Impedance
tDTKHDTKZ
-
15
Unit
ns
ns
ns
ns
ns
ns
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
6-16 MC68302 USER'S MANUAL MOTOROLA