參數(shù)資料
型號(hào): TS80C51RA2-MCAD
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: High Performance 8-bit Microcontrollers
中文描述: 8-BIT, 40 MHz, MICROCONTROLLER, PDIP40
封裝: PLASTIC, DIP-40
文件頁(yè)數(shù): 64/74頁(yè)
文件大?。?/td> 903K
代理商: TS80C51RA2-MCAD
64
Rev. C - 06 March, 2001
TS80C51RA2/RD2
TS83C51RB2/RC2/RD2
TS87C51RB2/RC2/RD2
Table 38. AC Parameters for a Variable Clock: derating formula
10.5.3. External Program Memory Read Cycle
Figure 25. External Program Memory Read Cycle
Symbol
Type
Standard
Clock
X2 Clock
-M
-V
-L
Units
T
LHLL
Min
2 T - x
T - x
10
8
15
ns
T
AVLL
Min
T - x
0.5 T - x
15
13
20
ns
T
LLAX
Min
T - x
0.5 T - x
15
13
20
ns
T
LLIV
Max
4 T - x
2 T - x
30
22
35
ns
T
LLPL
Min
T - x
0.5 T - x
10
8
15
ns
T
PLPH
Min
3 T - x
1.5 T - x
20
15
25
ns
T
PLIV
Max
3 T - x
1.5 T - x
40
25
45
ns
T
PXIX
Min
x
x
0
0
0
ns
T
PXIZ
Max
T - x
0.5 T - x
7
5
15
ns
T
AVIV
Max
5 T - x
2.5 T - x
40
30
45
ns
T
PLAZ
Max
x
x
10
10
10
ns
T
TPLAZ
ALE
PSEN
PORT 0
PORT 2
A0-A7
A0-A7
INSTR IN
INSTR IN
INSTR IN
ADDRESS
OR SFR-P2
ADDRESS A8-A15
ADDRESS A8-A15
12 T
CLCL
T
AVIV
T
LHLL
T
AVLL
T
LLIV
T
LLPL
T
PLPH
T
PXAV
T
PXIX
T
PXIZ
T
LLAX
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