AT89C5131A-L_07 Datasheet, PDF (167/186 Pages) ATMEL Corporation – 8-bit Flash Microcontroller with Full Speed USB Device

AT89C5131A-L
External Data Memory Write
Cycle
ALE
Table 119. AC Parameters for a Variable Clock
Symbol
T_RLRH
T_WLWH
T_RLDV
T_RHDX
T_RHDZ
T_LLDV
T_AVDV
T_LLWL
T_LLWL
T_AVWL
T_QVWX
T_QVWH
T_WHQX
T_RLAZ
T_WHLH
T_WHLH
Type
Min
Min
Max
Min
Max
Max
Max
Min
Max
Min
Min
Min
Min
Max
Min
Max
Standard
Clock
6T-x
6T-x
5T-x
x
2T-x
8T-x
9T-x
3T-x
3T+x
4T-x
T-x
7T-x
T-x
x
T-x
T+x
X2 Clock
3T-x
3T-x
2.5 T - x
x
T-x
4T -x
4.5 T - x
1.5 T - x
1.5 T + x
2T-x
0.5 T - x
3.5 T - x
0.5 T - x
x
0.5 T - x
0.5 T + x
X Parameter
20
20
25
0
20
40
60
25
25
25
15
25
10
0
15
15
T_WHLH
PSEN
WR
PORT 0
PORT 2
ADDRESS
OR SFR-P2
T_LLWL
T_WLWH
T_LLAX
A0-A7
T_AVWL
T_QVWX
T_QVWH
DATA OUT
ADDRESS A8-A15 OR SFR P2
T_WHQX
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
4338F–USB–08/07
167