參數(shù)資料
型號(hào)： LP87C51FC
廠商： INTEL CORP
元件分類： 微控制器/微處理器
英文描述： CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
中文描述： 8-BIT, OTPROM, 12 MHz, MICROCONTROLLER, PDIP40
封裝： PLASTIC, DIP-40
文件頁數(shù)： 10/18頁
文件大?。?/td> 250K
代理商： LP87C51FC
AUTOMOTIVE 87C51FA/FB/FC/FC-20
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
20%, V
SS
e
0V, Load Capacitance
for Port 0, ALE/PROG and PSEN
e
100 pF, Load Capacitance for All Other Outputs
e
80 pF)
ADVANCED INFORMATIONDCONTACT INTEL FOR DESIGN-IN INFORMATION
EXTERNAL PROGRAM MEMORY CHARACTERISTICS
Symbol
Parameter
12 MHz
Oscillator
Variable Oscillator
Units
Min
Max
87C51FA/FB/FC
/
87C51FC-20
Min
Max
1/T
CLCL
Oscillator Frequency
3.5
16/20
MHz
T
LHLL
ALE Pulse Width
127
2T
CLCL
b
40
T
CLCL
b
40
T
CLCL
b
30
ns
T
AVLL
Address Valid to ALE Low
43
ns
T
LLAX
Address Hold After ALE Low
53
ns
T
LLIV
ALE Low to Valid
Instruction In
234
4T
CLCL
b
100/
4T
CLCL
b
75
*
ns
T
LLPL
ALE Low to PSEN Low
53
T
CLCL
b
30
3T
CLCL
b
45
ns
T
PLPH
PSEN Pulse Width
205
ns
T
PLIV
PSEN Low to Valid
Instruction In
145
3T
CLCL
b
105/
3T
CLCL
b
90
*
ns
T
PXIX
Input Inst. Hold After
PSEN Trans
0
0
ns
T
PXIZ
Input Inst. Float After
PSEN Trans
59
T
CLCL
b
25/
T
CLCL
b
20
*
5T
CLCL
b
105
ns
T
AVIV
Address Valid to Valid
Instruction In
312
ns
T
PLAZ
PSEN Low to Address
Float
10
10
ns
T
RLRH
RD Pulse Width
400
6T
CLCL
b
100
6T
CLCL
b
100
ns
T
WLWH
WR Pulse Width
400
ns
10
相關(guān)PDF資料
PDF描述
LP87C51FC-20 CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
LP87C54 CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER WITH 16 KBYTES USER PROGRAMMABLE EPROM
LP87C54-20 CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER WITH 16 KBYTES USER PROGRAMMABLE EPROM
LPC1111FHN33 Cortex-M0, 8 kB flash, up to 4 kB SRAM
LPC1112FHN33 Cortex-M0, 16 kB flash, up to 4 kB SRAM
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