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FDC37C78-HT Datasheet(PDF) 79 Page - Microchip Technology

No. de pieza FDC37C78-HT
Descripción Electrónicos  Floppy Disk Controller
PDF  82 Pages
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Fabricante Electrónico  MICROCHIP [Microchip Technology]
Página de inicio  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

FDC37C78-HT Datasheet(HTML) 79 Page - Microchip Technology

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79
t3
t1
t2
t4
t5
t6
t7
t8
t9
t9
nDIR
nSTEP
nDS0-1
nINDEX
nRDATA
nWDATA
nIOW
nDS0-1,
nMTR0-1
FIGURE 7 - DISK DRIVE TIMING
*X specifies one MCLK period and Y specifies one WCLK period.
MCLK = Controller Clock to FDC (See Table 6).
WCLK = 2 x Data Rate (See Table 6).
Parameter
min
typ
max
units
t1
t2
t3
t4
t5
t6
t7
t8
t9
nDIR Set Up to nSTEP Low
nSTEP Active Time Low
nDIR Hold Time After nSTEP
nSTEP Cycle Time
nDS0-1 Hold Time from nSTEP Low
nINDEX Pulse Width
nRDATA Active Time Low
nWDATA Write Data Width Low
nDS0-1, MTR0-1 from End of nIOW
X*
X*
X*
X*
X*
X*
ns
Y*
ns
4
24
96
132
20
2
40
.5
25



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