參數(shù)資料
型號(hào)： 87C52EBAA
廠商： NXP Semiconductors N.V.
英文描述： CMOS single-chip 8-bit microcontrollers
中文描述： CMOS單芯片8位微控制器
文件頁(yè)數(shù)： 44/62頁(yè)
文件大小： 403K
代理商： 87C52EBAA
Philips Semiconductors
Product data
P80C3xX2; P80C5xX2;
P87C5xX2
80C51 8-bit microcontroller family
4K/8K/16K/32K ROM/OTP, low voltage (2.7 to 5.5 V),
low power, high speed (30/33 MHz)
2003 Jan 24
44
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 27. External Program Memory Read Cycle
ALE
PSEN
PORT 0
PORT 2
RD
A0–A7
FROM RI OR DPL
DATA IN
A0–A7 FROM PCL
INSTR IN
P2.0–P2.7 OR A8–A15 FROM DPF
A0–A15 FROM PCH
t
WHLH
t
LLDV
t
LLWL
t
RLRH
t
LLAX
t
RLAZ
t
AVLL
t
RHDX
t
RHDZ
t
AVWL
t
AVDV
t
RLDV
SU00025
Figure 28. External Data Memory Read Cycle
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
87C52EBFFA 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:CMOS single-chip 8-bit microcontrollers
87C52EBLKA 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:CMOS single-chip 8-bit microcontrollers
87C52EBPN 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:CMOS single-chip 8-bit microcontrollers
87C52X2 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:80C51 8-bit microcontroller family 4K/8K/16K/32K ROM/OTP 128B/256B RAM low voltage 2.7 to 5.5 V, low power, high speed 30/33 MHz
87C54 制造商:INTEL 制造商全稱(chēng):Intel Corporation 功能描述:CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
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