W83977AF Information Storage Devices, Inc, W83977AF Datasheet - Page 159

• Manufacturer Part Number: W83977AF
• Description: W83877TF Plus Kbc, Cir, RTC
• Manufacturer: Information Storage Devices, Inc

11.3.1 AC Characteristics, FDC continued
Notes:
1. Typical values for T = 25 C and normal supply voltage.
2. Programmable from 2 mS through 32 mS in 2 mS increments.
from DRQ
TC width
RESET width
Write precompensation
IOW or IOR response time
INDEX width
DIR setup time to STEP
DIR hold time from STEP
STEP pulse width
STEP cycle width
WD pulse width
PARAMETER
T
T
T
SYM.
T
T
T
T
T
T
T
MRW
WDD
WPC
RST
DST
STD
STP
IDX
TC
SC
CONDITIONS
- 147 -
TEST
1.8/3/3.
24/40/48
135/220
6.8/11.5
100/185
100/138
0.5/0.9
1.0/1.6
Note 2
/13.8
W83977F/ W83977AF
MIN.
/260
/225
/225
/1.0
/2.0
5
Publication Release Date: March 1998
(NOTE 1)
125/210
125/210
Note 2
/20/24
7/11.7
TYP.
6/12
/250
/250
/14
PRELIMINARY
7.2/11.9
150/235
150/235
Note 2
MAX.
/14.2
/275
/275
Revision 0.58
UNIT
nS
S
S
S
S
S
S
S
S
S