參數(shù)資料
型號(hào): SLC88B17QFP
廠商: STANDARD MICROSYSTEMS CORP
元件分類: 總線控制器
英文描述: ISA BUS CONTROLLER, PQFP160
封裝: QFP-160
文件頁數(shù): 29/54頁
文件大?。?/td> 333K
代理商: SLC88B17QFP
SMSC DS – SLC88B17
Page 35
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
T65
Write Data Valid Hold from
nMEMW, nIOW Inactive
14
ns
M,I/O
8,16
Figure 7
Figure 8
nMEMCS16
T66
nMEMCS16 Driven Active
from Valid LA[23:17]
65
ns
M
16
Figure 7
T67
nMEMCS16 Float from Valid
LA[23:17]
31
ns
M
16
Figure 7
T68
nMEMCS16 Valid Hold from
LA[23:17] Invalid
0ns
M
16
Figure 7
IOCHRDY
T69
IOCHRDY Inactive from
nMEMx, nIox Active
50
ns
M,I/O
8,16
Figure 7
Figure 8
T70
IOCHRDY Float from
IOCHRDY Rising
85
ns
M,I/O
8,16
4
Figure 8
T71
IOCHRDY Inactive Pulse
Width
0.12
2.5
s
M,I/O
8,16
INTERRUPT TIMINGS
T73
IRQx Inactive Pulse Width
100
ns
Figure 9
ISA BUS MASTER TIMINGS
nDACK
T74
nDACK , Inactive from DREQ
Inactive
240
ns
Figure 10
TRI-STATING & DRIVING THE BUS
T75
SLC88B17 Tri-States
Address, Data, & Control
Signals from nDACK, Active
30
ns
Figure 10
T76
SLC88B17 Tri-States
Address, Data, & Control
Signals from nDACK, Inactive
71
ns
Figure 10
nSMEMR & nSMEMW
T77
nSMEMR & nSMEMW Active
(falling edge) from nMEMR &
nMEMW Active (falling edge)
25
ns
Figure 10
T78
nSMEMR & nSMEMW
Inactive (rising edge) from
nMEMR & nMEMW Inactive
(rising edge)
35
ns
Figure 10
DATA SWAP LOGIC TIMING (ISA MASTER TO ISA SLAVE)
T79
SD[7:0] to SD[15:8]
Propagation Delay
26
ns
Figure 11
T80
SD[15:8] to SD[7:0]
Propagation Delay
26
ns
Figure 11
T81
SLC88B17 Drives Data Bus
from nIOR, nIOW, nMEMR or
nMEMW Active
26
ns
2
Figure 11
T82
SLC88B17 Tri-States Bus
from nIOR, nMEMR, or
nSMEMR Inactive
2
55
ns
2, 3
Figure 11
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