Datasheet

146
AT89C51ID2
4289C–8051–11/05
Table 102. AC Parameters for a Fix Clock
Symbol
-M -L
UnitsMin Max Min Max
T
RLRH
125 125 ns
T
WLWH
125 125 ns
T
RLDV
95 95 ns
T
RHDX
00ns
T
RHDZ
25 25 ns
T
LLDV
155 155 ns
T
AVDV
160 160 ns
T
LLWL
45 105 45 105 ns
T
AVWL
70 70 ns
T
QVWX
55ns
T
QVWH
155 155 ns
T
WHQX
10 10 ns
T
RLAZ
00ns
T
WHLH
5 45 5 45 ns
Table 103. AC Parameters for a Variable Clock
Symbol Type
Standard
Clock X2 Clock
X parameter for
-M range
X parameter for
-L range Units
T
RLRH
Min 6 T - x 3 T - x 25 25 ns
T
WLWH
Min 6 T - x 3 T - x 25 25 ns
T
RLDV
Max 5 T - x 2.5 T - x 30 30 ns
T
RHDX
Min x x 0 0 ns
T
RHDZ
Max 2 T - x T - x 25 25 ns
T
LLDV
Max 8 T - x 4T -x 45 45 ns
T
AVDV
Max 9 T - x 4.5 T - x 65 65 ns
T
LLWL
Min 3 T - x 1.5 T - x 30 30 ns
T
LLWL
Max 3 T + x 1.5 T + x 30 30 ns
T
AVWL
Min 4 T - x 2 T - x 30 30 ns
T
QVWX
Min T - x 0.5 T - x 20 20 ns
T
QVWH
Min 7 T - x 3.5 T - x 20 20 ns
T
WHQX
Min T - x 0.5 T - x 15 15 ns
T
RLAZ
Max x x 0 0 ns
T
WHLH
Min T - x 0.5 T - x 20 20 ns
T
WHLH
Max T + x 0.5 T + x 20 20 ns