W83877TF Datasheet, PDF (76/154 Pages) Winbond – I/O chip disk drive adapter

W83877TF
9.3 AC Characteristics
9.3.1 FDC: Data rate = 1 MB/500 KB/300 KB/250 KB/sec.
PARAMETER
SYM.
TEST
CONDITIONS
MIN.
SA9-SA0, AEN, DACK ,
TAR
25
CS, setup time to _IOR¡õ
SA9-SA0, AEN, DACK ,
TAR
0
hold time for IOR¡ô
IOR width
TRR
80
Data access time from
IOR ¡õ
TFD CL = 100 pf
Data hold from IOR¡õ
TDH CL = 100 pf
10
SD to from IOR ¡ô
TDF CL = 100 pf
10
IRQ delay from IOR¡ô
TRI
TYP.
(NOTE 1)
SA9-SA0, AEN, DACK ,
TAW
25
setup time to IOW ¡õ
SA9-SA0, AEN, DACK ,
TWA
0
hold time for IOW ¡ô
IOW width
TWW
60
Data setup time to IOW ¡ô ^TDW
60
Data hold time from
TWD
0
IOW ¡ô
IRQ delay from IOW ¡ô
TWI
DRQ cycle time
DRQ delay time DACK ¡õ
DRQ to DACK delay
DACK width
IOR delay from DRQ
IOW delay from DRQ
TMCY
TAM
TMA
TAA
TMR
TMW
27
0
260/430
/510
0
0
MAX.
80
50
360/570
/675
360/570
/675
50
UNIT
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
µS
nS
nS
nS
nS
nS
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Publication Release Date: March 1998
Version 0.61