LPC47M142-NC Standard Microsystems (SMSC), LPC47M142-NC Datasheet - Page 191

• Manufacturer Part Number: LPC47M142-NC
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LPC47M142-NC

• Lead Free Status / RoHS Status: Not Compliant

Note 1: The data is held until BUSY goes inactive or for time t3, whichever is longer. This only applies if another data
Note 1: Maximum value only applies if there is data in the FIFO waiting to be written out.
Note 2: BUSY is not considered asserted or deasserted until it is stable for a minimum of 75 to 130 ns.
SMSC DS – LPC47M14X
NAME
NAME
transfer is pending. If no other data transfer is pending, the data is held indefinitely.
t1
t2
t3
t4
t5
t6
t1
t2
t3
t4
t5
t6
t7
t8
nSTROBE
PD<7:0>
PDATA Valid to nSTROBE Active
nSTROBE Active Pulse Width
PDATA Hold from nSTROBE Inactive (Note 1)
nSTROBE Active to BUSY Active
BUSY Inactive to nSTROBE Active
BUSY Inactive to PDATA Invalid (Note 1)
nALF Valid to nSTROBE Asserted
PDATA Valid to nSTROBE Asserted
BUSY Deasserted to nALF Changed
(Notes 1,2)
BUSY Deasserted to PDATA Changed (Notes 1,2)
nSTROBE Asserted to Busy Asserted
nSTROBE Deasserted to Busy Deasserted
BUSY Deasserted to nSTROBE Asserted (Notes 1,2)
BUSY Asserted to nSTROBE Deasserted (Note 2)
BUSY
nSTROBE
PD<7:0>
nALF
BUSY
FIGURE 33 – ECP PARALLEL PORT FORWARD TIMING
FIGURE 32 – PARALLEL PORT FIFO TIMING
DESCRIPTION
DESCRIPTION
t6
t2
t1
t1
t7
Page 191
t5
t4
t2
t8
t6
MIN
MIN
600
600
450
680
80
80
80
80
80
0
0
0
0
t3
t3
t4
t6
TYP
TYP
t5
MAX
MAX
500
180
180
200
180
60
60
UNITS
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Rev. 03/19/2001