Datasheet

136
AT89C51IC2
4301D–8051–02/08
External Data Memory Write
Cycle
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
T
QVWH
T
LLAX
ALE
PSEN
WR
PORT 0
PORT 2
A0-A7 DATA OUT
ADDRESS
OR SFR-P2
T
AVWL
T
LLWL
T
QVWX
ADDRESS A8-A15 OR SFR P2
T
WHQX
T
WHLH
T
WLWH