w83877atd Winbond Electronics Corp America, w83877atd Datasheet - Page 176

• Manufacturer Part Number: w83877atd
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

EPP Data or Address Write Cycle Timing Parameters
Parallel Port FIFO Timing Parameters
DATA Valid to nSTROBE Active
nSTROBE Active Pulse Width
DATA Hold from nSTROBE Inactive
BUSY Inactive to PD Inactive
BUSY Inactive to nSTROBE Active
nSTROBE Active to BUSY Active
Ax Valid to IOW Asserted
SD Valid to Asserted
Command Asserted to WAIT Deasserted
IOCHRDY Deasserted to IOW Deasserted
PBDIR Low to WRITE Asserted
PD Invalid to Command Asserted
Command Asserted to
Time out
Command Deasserted to
IOW Deasserted to Ax Invalid
IOW Deasserted to IOW or IOR Asserted
IOW Asserted to WAIT Asserted
IOW Asserted to PD Valid
IOW to Command Asserted
IOW
WAIT Deasserted to IOCHRDY Deasserted
WAIT Asserted to Command Asserted
WAIT Asserted to WRITE Asserted
WAIT Asserted to WRITE Change
WAIT Asserted to PD Invalid
WAIT Asserted to Command Asserted
WAIT
Deasserted to
Deasserted to Command Deasserted
PARAMETER
WRITE
PARAMETER
WAIT
WAIT
Deasserted and PD invalid
Deasserted
Asserted
- 172 -
SYMBOL
SYM.
t1
t2
t3
t4
t5
t6
t10
t11
t12
t13
t14
t15
t16
t17
t18
t19
t20
t21
t22
t1
t2
t3
t4
t5
t6
t7
t8
t9
Publication Release Date: April 1998
MIN.
600
600
450
680
MIN.
80
40
10
10
10
40
60
60
60
10
60
60
10
0
0
0
0
0
0
5
0
0
0
W83877ATF
MAX.
MAX.
500
160
185
185
210
190
24
70
50
35
10
12
Version 0.51
UNIT
UNIT
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
S
S