參數(shù)資料
型號: AM188ER-25KCW
廠商: ADVANCED MICRO DEVICES INC
元件分類: 微控制器/微處理器
英文描述: CA-BAYONET
中文描述: 16-BIT, 25 MHz, MICROCONTROLLER, PQFP100
封裝: PLASTIC, QFP-100
文件頁數(shù): 67/112頁
文件大?。?/td> 2878K
代理商: AM188ER-25KCW
Am186
TM
ER and Am188
TM
ER Microcontrollers Data Sheet
67
DRAFT
COMMERCIAL AND INDUSTRIAL SWITCHING CHARACTERISTICS AND WAVEFORMS
In the switching waveforms that follow, several
abbreviations are used to indicate the specific periods
of a bus cycle. These periods are referred to as time
states. A typical bus cycle is composed of four
consecutive time states: t
1
, t
2
, t
3
, and t
4
. Wait states,
which represent multiple t
3
states, are referred to as t
w
states. When no bus cycle is pending, an idle (t
i
) state
occurs.
In the switching parameter descriptions, the
multiplexed address is referred to as the AD address
bus; the nonmultiplexed address is referred to as the A
address bus.
Key to Switching Waveforms
Must be
Steady
May
Change
from H to L
May
Change
from L to H
Does Not
Apply
Don’t Care,
Any Change
Permitted
Will be
Steady
Will be
Changing
from H to L
Will be
Changing
from L to H
Changing,
State
Unknown
Center
Line is High-
Impedance
Off
State
WAVEFORM
INPUT
OUTPUT
Invalid
Invalid
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參數(shù)描述
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AM188ER-25VD\\W 制造商:Advanced Micro Devices 功能描述: