Epson S1C33L03 User Manual
APPENDIX A <REFERENCE> EXTERNAL DEVICE INTERFACE TIMINGS
S1C33L03 PRODUCT PART
EPSON
A-121
A-1
A-ap
A.3
ROM and Burst ROM
Burst ROM and mask ROM interface setup examples
Operating
Normal read cycle
Burst read cycle
Output disable
frequency
Wait cycle
Read cycle
Wait cycle
Read cycle
delay cycle
20MHz
2
3
1
2
1.5
25MHz
3
4
1
2
1.5
33MHz
4
5
2
3
1.5
Burst ROM and mask ROM interface timing
Burst ROM and mask ROM interface
33MHz
25MHz
20MHz
Parameter
Symbol
Min.
Max.
Cycle
Time
Cycle
Time
Cycle
Time
Access time
t
ACC
–
100
5
150
4
160
3
150
#CE output delay time
t
CE
–
100
5
150
4
160
3
150
#OE output delay time
t
OE
–
50
4.5
135
3.5
140
2.5
125
Burst access time
t
BAC
–
50
3
90
2
80
2
100
Output disable delay time
t
DF
0
40
1.5
45
1.5
60
1.5
75
ROM: 100ns, CPU: 33MHz, normal read
t
ACC
t
CE
t
OE
BCLK
A[23:0]
#CE9, 10
#RD
D[15:0]
RD data
;;;;;
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;;;;;;;;;;;;;;;
;;;;
;;;;
t
DF
ROM: 100ns, CPU: 33MHz, burst read
Normal read cycle
Burst read cycle
t
BAC
t
BAC
t
BAC
BCLK
A[23:0]
#CE9, 10
#RD
D[15:0]
RD data
;;;
;;;
;;;;;;;;
;;;;;;;;
;;;
;;;
RD data
;;;;;
;;;;;
RD data
;;;;;
;;;;;
RD data
;;;;;
;;;;;
t
DF