參數(shù)資料
型號(hào): T89C51RD2-RLVIL
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 0 to 40 MHz Flash Programmable 8-bit Microcontroller
中文描述: 8-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP44
封裝: VQFP-44
文件頁(yè)數(shù): 89/104頁(yè)
文件大?。?/td> 798K
代理商: T89C51RD2-RLVIL
89
T89C51RD2
4243G
8051
05/03
External Data Memory Write
Cycle
Table 50.
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
20
20
ns
T
WLWH
Min
6 T - x
3 T - x
20
20
ns
T
RLDV
Max
5 T - x
2.5 T - x
25
25
ns
T
RHDX
Min
x
x
0
0
ns
T
RHDZ
Max
2 T - x
T - x
20
20
ns
T
LLDV
Max
8 T - x
4T -x
40
40
ns
T
AVDV
Max
9 T - x
4.5 T - x
60
60
ns
T
LLWL
Min
3 T - x
1.5 T - x
25
25
ns
T
LLWL
Max
3 T + x
1.5 T + x
25
25
ns
T
AVWL
Min
4 T - x
2 T - x
25
25
ns
T
QVWX
Min
T - x
0.5 T - x
15
15
ns
T
QVWH
Min
7 T - x
3.5 T - x
15
15
ns
T
WHQX
Min
T - x
0.5 T - x
10
10
ns
T
RLAZ
Max
x
x
0
0
ns
T
WHLH
Min
T - x
0.5 T - x
15
15
ns
T
WHLH
Max
T + x
0.5 T + x
15
15
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
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