Datasheet

Copyright © 2010 Future Technology Devices International Limited 14
Document No.: FT_000052
FT245R USB FIFO IC Datasheet Version 2.12
Clearance No.: FTDI# 39
3.6 FT245R FIFO WRITE Timing Diagrams
Figure 3.4 FIFO Write Cycle
Time
Description
Minimum
Maximum
Unit
T7
WR Active Pulse Width
50
-
ns
T8
WR to WR Pre-Charge Time
50
-
ns
T9
Valid data setup to WR falling
edge*
20
-
ns
T10
Valid Data Hold Time from WR
Inactive*
0
-
ns
T11
WR Inactive to TXE#
5
25
ns
T12
TXE# Inactive After WR Cycle
80
-
ns
Table 3.10 FIFO Write Cycle
*Load = 30pF
Valid Data
D[7...0]
WR
TXE#
T7
T12
T11
T8
T9
T10