參數(shù)資料
型號(hào): intel i387
廠商: Intel Corp.
英文描述: Military I387 Math Coprocessor(軍用I387數(shù)學(xué)協(xié)處理器)
中文描述: 軍事I387數(shù)學(xué)協(xié)處理器(軍用I387數(shù)學(xué)協(xié)處理器)
文件頁(yè)數(shù): 32/41頁(yè)
文件大小: 457K
代理商: INTEL I387
MILITARY i387
TM
MATH COPROCESSOR
Table 5.3d. Timing Requirements of the Bus Interface Unit
(Continued)
Pin
Symbol
Parameter
16 MHz
1.5V
20 MHz
1.5V
25 MHz
1.5V
Comments
Min
(ns)
Max
(ns)
Min
(ns)
Max
(ns)
Min
(ns)
Max
(ns)
D31–D0
D31–D0
D31–D0
D31–D0
t8
t10
t11
t12 (Note 1)
Out Delay
Setup Time
Hold Time
Float Time
1
54
1
54
0
50
C
L
e
120 pF
*
11
11
6
11
11
6
11
11
5
33
27
24
C
L
e
120 pF
*
C
L
e
75 pF
*
C
L
e
75 pF
*
C
L
e
75 pF
*
C
L
e
75 pF
*
PEREQ
BUSY
ERROR
READYO
t13 (Note 1)
t13 (Note 1)
t13 (Note 1)
t13 (Note 1)
Float Time
Float Time
Float Time
Float Time
1
1
1
1
60
60
60
60
1
1
1
1
50
50
50
50
1
1
1
1
40
40
40
40
ADS
ADS
W/R
W/R
t14
t15
t14
t15
Setup Time
Hold Time
Setup Time
Hold Time
26
5
26
5
21
5
21
5
16
4
16
4
READY
READY
CMD0
CMD0
NPS1
NPS2
NPS1
NPS2
STEN
STEN
t16
t17
t16
t17
t16
Setup Time
Hold Time
Setup Time
Hold Time
Setup Time
21
4
21
2
21
12
4
19
4
19
9
4
16
4
16
t17
Hold Time
2
2
4
t16
t17
Setup Time
Hold Time
21
2
21
2
15
2
RESETIN
RESETIN
*
C
L
e
50 pF for 25 MHz timing.
t18
t19
Setup Time
Hold Time
13
4
12
4
10
3
NOTE:
1. Float conditions occurs when maximum output current becomes less than I
LO
in magnitude. Float delay is not tested.
32
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