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參數(shù)資料
| 型號： | 87C576 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 80C51 8-bit microcontroller family(80C51八位微控制器系列) |
| 中文描述： | 80C51的8位單片機(jī)系列（80C51的八位微控制器系列） |
| 文件頁數(shù)： | 34/46頁 |
| 文件大?。?/td> | 447K |
| 代理商： | 87C576 |
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Philips Semiconductors
Product specification
83C576/87C576
80C51 8-bit microcontroller family
8K/256 OTP/ROM, 6 channel 10-bit A/D, 4 comparators,
failure detect circuitry, watchdog timer
1998 Jun 04
34
UPI AC ELECTRICAL CHARACTERISTICS
T
amb
= 0
°
C to +70
°
C, –40
°
C to +85
°
C, and –40
°
C to +125
°
C; V
CC
= 5V
±
10%, V
SS
= 0V
SYMBOL
PARAMETER
MIN
MAX
UNIT
t
AR
CS, A setup to RD
0
ns
t
RA
CS, A hold after RD
35
ns
t
RR
RD pulse width
35
ns
t
AD
CS, A to data out delay
45
ns
t
RD
RD to data out delay
35
ns
t
DF
RD to data float delay (guaranteed by design)
30
ns
t
AW
CS, A setup to WR
0
ns
t
WA
CS, A hold after WR
15
ns
t
WW
WR pulse width
45
ns
t
DW
Data setup to WR
5
ns
t
WD
Data hold after WR
25
ns
EXPLANATION OF THE AC SYMBOLS
Each timing symbol has five characters. The first character is always
‘t’ (= time). The other characters, depending on their positions,
indicate the name of a signal or the logical status of that signal.
The designations are:
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
Examples:
t
AVLL
= Time for address valid to ALE low.
t
LLPL
=Time for ALE low to PSEN low.
t
PXIZ
ALE
PSEN
PORT 0
PORT 2
A0–A15
A8–A15
A0–A7
A0–A7
t
AVLL
t
PXIX
t
LLAX
INSTR IN
t
LHLL
t
PLPH
t
LLIV
t
PLAZ
t
LLPL
t
AVIV
SU00006
t
PLIV
Figure 25.
External Program Memory Read Cycle
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| 87C652 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 8-bit microcontroller 8K/16K, 256 OTP, I2C |
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