SAB 80C515/80C535
AC Characteristics (cont’d)
Parameter Symbol
Limit values
Unit
16 MHz clock
Variable clock
= 3.5 MHz to 16 MHz
1/t
CLCL
min.
max.
min.
max.
External Data Memory Characteristics
RDpulse width
t
t
t
t
t
t
t
t
t
t
275
275
90
–
–
6 t
6 t
2 t
–
– 100
–
ns
ns
ns
RLRH
WLWH
LLAX2
RLDV
RHDX
RHDZ
LLDV
CLCL
CLCL
CLCL
WR pulse width
–
– 100
– 35
–
Address hold after ALE
RD to valid data in
Data hold after RD
Data float after RD
ALE to valid data in
Address to valid data in
ALE to WR or RD
–
–
148
–
5 t
–
– 165 ns
ns
CLCL
0
0
–
55
–
2 t
– 70
ns
ns
CLCL
CLCL
–
350
398
238
103
–
8t
– 150
–
–
9 t
– 165 ns
AVDV
LLWL
WHLH
CLCL
CLCL
138
23
3 t
– 50
3 t
+ 50
ns
ns
CLCL
CLCL
CLCL
WR or RD high to ALE
high
t
– 40
t
+ 40
CLCL
CLCL
Address valid to WR
t
t
120
13
–
–
4 t
– 130
–
–
ns
ns
AVWL
QVWX
Data valid to WR transi-
tion
t
– 50
CLCL
Data setup before WR
Data hold after WR
t
t
t
288
13
–
–
–
0
7 t
– 150
– 50
–
–
0
ns
ns
ns
QVWH
WHQX
RLAZ
t
CLCL
Address float after RD
–
Semiconductor Group
45
INFINEON [ Infineon ]
