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| 型號(hào)： | AM486DX4 |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | High-Performance, Clock-Selectable, 3.3 V, 32-Bit Microprocessor(3.3V高性能時(shí)鐘可選32位微處理器) |
| 中文描述： | 高性能，時(shí)鐘可選，3.3伏，32位微處理器（3.3高性能時(shí)鐘可選32位微處理器） |
| 文件頁(yè)數(shù)： | 17/26頁(yè) |
| 文件大小： | 335K |
| 代理商： | AM486DX4 |
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17
Am486DX4 Microprocessor
AMD
P R E L I M I N A R Y
SWITCHING CHARACTERISTICS over COMMERCIAL operating ranges
Operating Frequency/Bus Frequency: 120/40MHz
; T
CASE
=0
°
C to +85
°
C; C
L
=50 pF unless otherwise specified.
Note
:
1. Not 100% tested. Guaranteed by design characterization.
Preliminary
Symbol
Parameter Description
Notes
Figure
Min
Max
Unit
Operating Frequency
8
40
MHz
t
1
CLK Period
2
25
125
ns
t
1a
t
2
CLK Period Stability
Adjacent Clocks
0.1%
CLK High Time
@ 2.0 V
2
9
ns
t
3
CLK Low Time
@ 0.8 V
2
9
ns
t
4
CLK Fall Time
2
3
ns
t
5
CLK Rise Time
2
3
ns
t
6
A31
A2, PWT, PCD, M/IO, BE3
BE0, D/C,
W/R, ADS, LOCK,
FERR, BREQ, HLDA
Valid Delay
A31
A2, PWT, PCD, M/IO, BE3
BE0, D/C,
W/R, ADS, LOCK, FERR, BREQ, HLDA
Float
Delay
7
3
14
ns
t
7
(Note 1)
8
3
18
ns
t
8
PCHK Valid Delay
6
3
16
ns
t
8a
BLAST, PLOCK Valid Delay
7
3
18
ns
t
9
t
10
BLAST, PLOCK
Float Delay
(Note 1)
8
3
16
ns
D31
D0, DP3
DP0 Write Data Valid Delay
7
3
16
ns
t
11
t
12
D31
D0, DP3
DP0 Write Data Float Delay
(Note 1)
8
3
18
ns
EADS Setup Time
4
5
ns
t
13
EADS Hold Time
4
3
ns
t
14
KEN, BS16, BS8 Setup Time
4
5
ns
t
15
KEN, BS16, BS8 Hold Time
4
3
ns
t
16
RDY, BRDY Setup Time
5
5
ns
t
17
RDY, BRDY Hold Time
5
3
ns
t
18
HOLD, AHOLD Setup Time
4
6
ns
t
18a
BOFF Setup Time
4
8
ns
t
19
HOLD, AHOLD, BOFF Hold Time
4
3
ns
t
20
RESET, FLUSH, A20M, NMI, INTR,
IGNNE
Setup Time
RESET, FLUSH, A20M, NMI, INTR
,
IGNNE
Hold Time
D31
D0, DP3
DP0, A31
A4 Read Setup Time
3, 4
5
ns
t
21
3, 4
3
ns
t
22
4, 5
5
ns
t
23
D31
D0, DP3
DP0, A31
A4 Read Hold Time
4, 5
3
ns
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