SAB80515 Datasheet, PDF (262/270 Pages) Siemens Semiconductor Group – 8-Bit Single-Chip Microcontroller Family

Device Specifications
AC Characteristics (cont’d)
Parameter
Symbol
Limit values
Unit
20 MHz
clock
Variable clock
1/t_CLCL = 3.5 MHz to 20 MHz
min. max.
min.
max.
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 or RD
WR or RD high to ALE
high
t_RLRH
t_WLWH
t_LLAX2
t_RLDV
t_RHDX
t_RHDZ
t_LLDV
t_AVDV
t_LLWL
t_AVWL
t_WHLH
200 –
6 t_CLCL – 100 –
ns
200 –
6 t_CLCL – 100 –
ns
65 –
2 t_CLCL – 35 –
ns
–
155 –
5 t_CLCL – 95 ns
0
–
0
–
ns
–
40 –
2 t_CLCL – 60 ns
–
250 –
8 t_CLCL – 150 ns
–
285 –
9 t_CLCL – 165 ns
100 200 3 t_CLCL – 50 3 t_CLCL + 50 ns
70 –
4 t_CLCL – 130 –
ns
20 80
t_CLCL – 30
t_CLCL + 30
ns
Data valid to WR transition t_QVWX 5
–
t_CLCL – 45
–
ns
Data setup before WR
t_QVWH 200 –
7 t_CLCL – 150 –
ns
Data hold after WR
t_WHQX 10 –
t_CLCL – 40
–
ns
Address float after RD
t_RLAZ
–
0
–
0
ns
Semiconductor Group
262