Datasheet

Copyright © 2010 Future Technology Devices International Limited 13
Document No.: FT_000052
FT245R USB FIFO IC Datasheet Version 2.12
Clearance No.: FTDI# 39
3.5 FT245R FIFO READ Timing Diagrams
Figure 3.3 FIFO Read Cycle
Time
Description
Minimum
Maximum
Unit
T1
RD# Active Pulse Width
50
-
ns
T2
RD# to RD# Pre-Charge Time
50 + T6
-
ns
T3
RD# Active to Valid Data*
20
50
ns
T4
Valid Data Hold Time from RD#
Inactive*
0
-
ns
T5
RD# Inactive to RXF#
0
25
ns
T6
RXF# Inactive After RD Cycle
80
-
ns
Table 3.9 FIFO Read Cycle Timings
*Load = 30pF
RXF#
RD#
D[7...0]
T3
T1
T5
T6
T2
T4
Valid Data