W83877TF Datasheet, PDF (77/154 Pages) Winbond – I/O chip disk drive adapter

W83877TF
9.3 AC Characteristics, FDC continued
PARAMETER
SYM.
IOW or IOR response time
from DRQ
TC width
TMRW
TTC
TEST
CONDITIONS
RESET width
TRST
INDEX width
TIDX
DIR setup time to STEP
TDST
DIR hold time from STEP
STEP pulse width
TSTD
TSTP
STEP cycle width
WD pulse width
TSC
TWDD
Write precompensation
TWPC
Notes:
1. Typical values for T = 25° C and normal supply voltage.
2. Programmable from 2 mS through 32 mS in 2 mS increments.
MIN.
135/220
/260
1.8/3/3.
5
0.5/0.9
/1.0
1.0/1.6
/2.0
24/40/48
6.8/11.5
/13.8
Note 2
100/185
/225
100/138
/225
TYP.
(NOTE 1)
6/12
/20/24
7/11.7
/14
Note 2
125/210
/250
125/210
/250
MAX.
7.2/11.9
/14.2
Note 2
150/235
/275
150/235
/275
UNIT
µS
nS
µS
µS
µS
µS
µS
µS
µS
µS
- 132 -
Publication Release Date: March 1998
Version 0.61