AT89C51RB2-RLTCM ATMEL [ATMEL Corporation], AT89C51RB2-RLTCM Datasheet - Page 113
![no-image](/images/no-image-200.jpg)
AT89C51RB2-RLTCM
Manufacturer Part Number
AT89C51RB2-RLTCM
Description
8-bit Microcontroller with 16K/ 32K Bytes Flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT89C51RB2-RLTCM.pdf
(125 pages)
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Part Number:
AT89C51RB2-RLTCM
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External Data Memory Write
Cycle
4180B–8051–04/03
PORT 0
PORT 2
PSEN
ALE
WR
OR SFR-P2
ADDRESS
Symbol
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
WLWH
QVWX
QVWH
WHQX
RHDX
RHDZ
AVWL
WHLH
WHLH
RLRH
RLDV
AVDV
LLDV
LLWL
LLWL
RLAZ
Type
A0-A7
Max
Max
Max
Max
Max
Max
Max
Min
Min
Min
Min
Min
Min
Min
Min
Min
T
T
LLAX
AVWL
T
LLWL
Standard
Clock
3 T + x
6 T - x
6 T - x
5 T - x
2 T - x
8 T - x
9 T - x
3 T - x
4 T - x
7 T - x
T + x
T - x
T - x
T - x
x
x
ADDRESS A8-A15 OR SFR P2
X2 Clock
T
1.5 T + x
0.5 T + x
2.5 T - x
4.5 T - x
1.5 T - x
0.5 T - x
3.5 T - x
0.5 T - x
0.5 T - x
QVWX
3 T - x
3 T - x
2 T - x
4T -x
T - x
x
x
T
X Parameter for -
QVWH
T
DATA OUT
WLWH
M Range
25
25
30
25
45
65
30
30
30
20
20
15
20
20
0
0
AT89C51RB2/RC2
T
WHLH
X Parameter for -
L Range
25
25
30
25
45
65
30
30
30
20
20
15
20
20
T
0
0
WHQX
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
113
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