SAB80C517A-N18 Siemens Semiconductor Group, SAB80C517A-N18 Datasheet - Page 67

• Manufacturer Part Number: SAB80C517A-N18
• Description: 8-Bit CMOS Single-Chip Microcontroller
• Manufacturer: Siemens Semiconductor Group

AC Characteristics (cont’d)
Parameter
External Data Memory Characteristics
RD pulse width
WR pulse width
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
Address valid to WR
Data valid to WR
transition
Data setup before WR
Data hold after WR
Address float after RD
Semiconductor Group
WR or RD high to ALE
high
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
RLRH
WLWH
LLAX2
RLDV
RHDX
RHDZ
LLDV
AVDV
LLWL
WHLH
AVWL
QVWX
QVWH
WHQX
RLAZ
233
233
81
–
0
–
–
–
117
16
92
11
239
16
–
18 MHz Clock
min.
66
–
–
–
128
–
51
294
335
217
96
–
–
–
–
0
max.
6 t
6 t
2 t
–
0
–
–
–
3 t
t
4 t
t
7 t
t
–
Limit Values
1/t
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
min.
– 40
– 45
– 40
SAB 80C517A/83C517A-5
– 100
– 50
Variable Clock
– 100
– 30
– 130
– 150
= 3.5 MHz to 18 MHz
–
–
–
5 t
–
2 t
8 t
9 t
3 t
t
–
–
–
–
0
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
max.
+40
– 150
– 150
– 165
+50
– 60
1994-05-01
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Unit