lpc47s457-ns Standard Microsystems Corp., lpc47s457-ns Datasheet - Page 236

• Manufacturer Part Number: lpc47s457-ns
• Description: Advanced I/o With X-bus Interface
• Manufacturer: Standard Microsystems Corp.

Note 1: nWAIT is considered to have settled after it does not transition for a minimum of 50 ns.
Note 2: When not executing a write cycle, EPP nWRITE is inactive high.
SMSC LPC47S45x
ADDRSTB
NAME
DATASTB
T10
PD<7:0>
t11
t12
t13
T1
T2
T3
T4
T5
T6
T7
T8
T9
nWRITE
nWAIT
nWAIT Asserted to nWRITE Deasserted
nWAIT Deasserted to nWRITE Modified (Notes 1,2)
nWAIT Asserted to PDATA Hi-Z (Note 1)
Command Asserted to PDATA Valid
Command Deasserted to PDATA Hi-Z
nWAIT Deasserted to PDATA Driven (Note 1)
PDIR Set to Command
PDATA Hi-Z to Command Asserted
nWRITE Deasserted to Command
nWAIT Asserted to Command Asserted
nWAIT Deasserted to Command Deasserted
(Note 1)
PDATA Valid to nWAIT Deasserted
PDATA Hi-Z to nWAIT Deasserted
FIGURE 27 − EPP 1.9 DATA OR ADDRESS READ CYCLE
DESCRIPTION
t3
t1
DATASHEET
t9
t8
t7
Page 236 of 259
t4
t11
MIN
60
60
60
60
0
0
0
0
0
1
0
0
0
t10
TYP
t5
t12
MAX
185
190
180
190
195
180
20
30
t6
t2
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
s
Rev. 08-10-09