参数资料
型号: SLC88B17QFP
厂商: STANDARD MICROSYSTEMS CORP
元件分类: 总线控制器
英文描述: ISA BUS CONTROLLER, PQFP160
封装: QFP-160
文件页数: 30/54页
文件大小: 333K
代理商: SLC88B17QFP
SMSC DS – SLC88B17
Page 36
Rev. 09/28/99
Table 7 - ISA Bus Timing
FUNCTIONAL OPERATING RANGE (VCC=5.0V
±±±± 0.25V, TCASE=0°°°°C TO +85°°°°C)
SYMBOL
PARAMETER
MIN
MAX
UNITS
TYPE
SIZE
NOTES
FIGURE
T83
SLC88B17 Tri-States Bus
from nIOW, nMEMW, or
nSMEME Inactive
2
60
ns
2, 3
Figure 11
DMA COMPATIBLE TIMINGS
DREQ
T84
DREQ Active Hold from nIOR
Active
558
ns
5
Figure 13
T85
DREQ Active Hold from
nIOW Active
315
ns
5
Figure 12
nDACK
T86
nDACK Active to nIOR Active
73
ns
Figure 13
T87
nDACK Active to nIOW Active
312
ns
T88
nDACK Inactive Hold from
nIOR Inactive
100
ns
T89
nDACK Inactive Hold from
nIOW Inactive
155
ns
Figure 12
AEN & BALE
T90
AEN Active to nIox Active
111
ns
Figure 12
Figure 13
T91
AEN & BALE Inactive from
nIox Inactive
41
ns
Figure 13
LA[23:19], SA[19:0], NSBHE
T92
LA[23:19], SA[19:0], nSBHE
Valid Setup to nMEMx Active
99
ns
Figure 12
Figure 13
T93
LA[23:19], SA[19:0], nSBHE
Valid Hold from nMEMx
Inactive
51
ns
Figure 13
nMEMR, nMEMW, nIOR, nIOW
T94
nIOW & nMEMW Active
Pulse Width
465
ns
Figure 12
T95
nMEMR Active Pulse Width
495
ns
T96
nIOR Active Pulse Width
760
ns
T97
nIOW Inactive Pulse Width
(continuous)
465
ns
T98
nIOR Inactive Pulse Width
(continuous)
160
ns
Figure 13
T99
nIOR Active to nMEMW
Active
230
ns
Figure 13
T100
nMEMR Active to nIOW
Active
-26
ns
Figure 12
T101
nMEMR Active Hold from
nIOW Inactive
40
ns
Figure 12
T102
nIOR Active Hold from
nMEMW Inactive
40
ns
Figure 13
T103
nMEMx Active Hold from
IOCHRDY Active
120
ns
Figure 12
Figure 13
nSMEMR & nSMEMW
T104
nSMEMR & nSMEMW Valid
15
ns
Figure 12
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