參數(shù)資料
型號(hào)： P87C528EFFFA
廠商： NXP SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： CMOS single-chip 8-bit microcontroller
中文描述： 8-BIT, UVPROM, 8 MHz, MICROCONTROLLER, CDIP40
文件頁(yè)數(shù)： 16/26頁(yè)
文件大?。?/td> 447K
代理商： P87C528EFFFA
Philips Semiconductors
Product specification
80C528/83C528
CMOS single-chip 8-bit microcontrollers
1995 Feb 02
16
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
Figure 1. External Program Memory Read Cycle
ALE
PSEN
PORT 0
PORT 2
A8–A15
A8–A15
A0–A7
A0–A7
t
AVLL
t
PXIX
t
LLAX
INSTR IN
t
PLIV
t
LHLL
t
PLPH
t
LLIV
t
PLAZ
t
LLPL
t
AVIV
ALE
PSEN
PORT 0
PORT 2
Figure 2. External Data Memory Read Cycle
RD
A0–A7
FROM RI OR DPL
DATA IN
A0–A7 FROM PCL
INSTR IN
P2.0–P2.7 OR A8–A15 FROM DPH
A8–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
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
P87C528EFLKA 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:CMOS single-chip 8-bit microcontroller
P87C528EFP 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
P87C528EFPN 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 8-bit microcontrollers 16K/32K, 512 OTP, I2C, watchdog timer
P87C528EHA 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
P87C528EHK 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
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