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參數(shù)資料
| 型號： | MD80C51 |
| 廠商： | Intel Corp. |
| 英文描述： | CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER |
| 中文描述： | CHMOS單片8位微控制器 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大小： | 229K |
| 代理商： | MD80C51 |
AUTOMOTIVE 80C31BH/80C51BH/87C51
EXPLANATION OF THE AC SYMBOLS
Each timing symbol has 5 characters. The first char-
acter is always a ‘T’ (stands for time). The other
characters, depending on their positions, stand for
the name of a signal or the logical status of that
signal. The following is a list of all the characters and
what they stand for.
A:Address.
C:Clock.
D:Input data.
H:Logic level HIGH.
I:Instruction (program memory contents).
L:Logic level LOW, or ALE.
P:PSEN.
Q:Output data.
R:RD signal.
T:Time.
V:Valid.
W:WR signal.
X:No longer a valid logic level.
Z:Float.
For example,
T
AVLL
e
Time from Address Valid to ALE Low.
T
LLPL
e
Time from ALE Low to PSEN Low.
AC CHARACTERISTICS:
(T
A
e b
40
§
C to
a
125
§
C; V
CC
e
5V
g
10% (5V
g
20% EPROM Only);
V
SS
e
0V; Load Capacitance for Port 0, ALE, and PSEN
e
100 pF; Load Capacitance for All Other
Outputs
e
80 pF)
EXTERNAL PROGRAM AND DATA MEMORY CHARACTERISTICS
Symbol
Parameter
12 MHz Osc
Variable Oscillator
Units
Min
Max
Min
Max
1/T
CLCL
Oscillator Frequency
87C51/80C51BH/80C31BH
MHz
3.5
12–16
T
LHLL
T
AVLL
T
LLAX
T
LLIV
T
LLPL
T
PLPH
T
PLIV
T
PXIX
T
PXIZ
T
AVIV
T
PLAZ
T
RLRH
T
WLWH
T
RLDV
T
RHDX
T
RHDZ
T
LLDV
T
AVDV
T
LLWL
T
AVWL
T
QVWX
T
WHQX
T
RLAZ
T
WHLH
ALE Pulse Width
127
2T
CLCL
b
40
T
CLCL
b
55
T
CLCL
b
35
ns
Address Valid to ALE Low
28
ns
Address Hold After ALE Low
48
ns
ALE Low to Valid Instr In
224
4T
CLCL
b
110
ns
ALE Low to PSEN Low
43
T
CLCL
b
40
3T
CLCL
b
45
ns
PSEN Pulse Width
205
ns
PSEN Low to Valid Instr In
135
3T
CLCL
b
115
ns
Input Instr Hold After PSEN
0
0
ns
Input Instr Float After PSEN
59
T
CLCL
b
25
5T
CLCL
b
105
10
ns
Address Valid to Valid Instr In
312
ns
PSEN Low to Address Float
10
ns
RD Pulse Width
400
6T
CLCL
b
100
6T
CLCL
b
100
ns
WR Pulse Width
400
ns
RD Low to Valid Data In
252
5T
CLCL
b
165
ns
Data Hold After RD High
0
0
ns
Data Float After RD High
97
2T
CLCL
b
70
8T
CLCL
b
150
9T
CLCL
b
165
3T
CLCL
a
50
ns
ALE Low to Valid Data In
517
ns
Address Valid to Valid Data In
585
ns
ALE Low to RD or WR Low
200
300
3T
CLCL
b
50
4T
CLCL
b
130
T
CLCL
b
60
T
CLCL
b
50
ns
Address Valid to RD or WR Low
203
ns
Data Valid to WR Transition
23
ns
Data Hold After WR High
33
ns
RD Low to Address Float
0
0
ns
RD or WR High to ALE High
43
123
T
CLCL
b
40
T
CLCL
a
40
ns
10
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MD80C51BH | 制造商:ROCHESTER 制造商全稱:ROCHESTER 功能描述:CMOS SINGLE - CHIP 8-BIT MICROCOMPUTER 64K program Memory Space |
| MD80C51FB | 制造商:Rochester Electronics LLC 功能描述: |
| MD80C86 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS 16-Bit Microprocessor |
| MD80C862 | 制造商:Intel 功能描述:PROCESSOR:MICRO-PROCESSOR |
| MD80C86-2 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS 16-Bit Microprocessor |
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