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FDC37C78-HT Datasheet(PDF) 77 Page - Microchip Technology

Part # FDC37C78-HT
Description  Floppy Disk Controller
PDF  82 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

FDC37C78-HT Datasheet(HTML) 77 Page - Microchip Technology

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77
FIGURE 5 - DMA TIMING
nDACK Delay Time from DRQ High
DRQ Reset Delay from nIOR or nIOW
DRQ Reset Delay from nDACK Low
nDACK Width
nIOR Delay from DRQ High
nIOW Delay from DRQ High
Data Access Time from nIOR Low
Data Set Up Time to nIOW High
Data to Float Delay from nIOR High
Data Hold Time from nIOW High
nDACK Set Up to nIOW/nIOR Low
nDACK Hold After nIOW/nIOR High
TC Pulse Width
nCS Set Up to nIOR/nIOW
nCS Hold from nDACK
TC Active to DRQ Inactive
Parameter
min
typ
max
units
t1
t2
t3
t4
t5
t6
t7
t8
t9
t10
t11
t12
t13
t14
t15
t16
0
150
0
0
40
10
10
5
10
60
40
10
100
100
100
60
100
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
t15
t2
t3
t12
t16
t1
t4
t5
t6
t11
t14
t8
t7
t9
t10
t13
nCS
DRQ,
nDACK
nIOR
or
nIOW
DATA
(DO-D7)
TC
DATA VALID



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