W83627DHG Nuvoton Technology Corporation of America, W83627DHG Datasheet - Page 247

• Manufacturer Part Number: W83627DHG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627DHG

• Applications: PC's, PDA's
• Interface: LPC
• Voltage - Supply: 3.3V
• Package / Case: 128-XFQFN
• Mounting Type: Surface Mount
• Pin Count: 128
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

21.3.7 Floppy Disk Drive Timing
FDC: Data rate = 1MB, 500KB, 300KB, 250KB/sec.
Notes:
1.
2.
DIR# setup time to STEP#
DIR# hold time from STEP#
STEP# pulse width
STEP# cycle width
INDEX# pulse width
RDATA# pulse width
WD# pulse width
Typical values for T = 25 ° C and normal supply voltage.
Programmable from 0.5 mS through 32 mS as described in step rate table.
(Please refer to the description of the SPECIFY command set.)
DATA RATE
SRT
…
E
F
0
1
PARAMETER
1MB/S
7.5
1.0
0.5
…
8
Floppy Disk Driving Timing
Step Rate Table
SYM.
T
T
T
T
T
T
T
DST
STD
STP
IDX
WD
SC
RD
500KB/S
-235-
16
15
/13.8/27.8
…
2
1
/417/500
/225/475
6.8/11.5
NOTE 2
125/250
100/185
/2.0/4.0
1.0/1.6
/48/96
24/40
MIN.
40
Publication Release Date: Aug, 22, 2007
(NOTE 1)
/250/500
NOTE 2
125/210
7/11.7
/14/28
300KB/S
TYP.
26.7
3.33
1.67
25
…
W83627DHG
/14.2/28.2
/275/525
7.2/11.9
NOTE 2
150/235
MAX.
250KB/S
32
30
…
Version 1.4
4
2
UNIT
mS
µS
µS
µS
nS
nS
nS