FT240X USB 8-BIT FIFO IC Datasheet
Version 1.3
Document No.: FT_000626 Clearance No.: FTDI# 259
3.6 FT240X FIFO READ Timing Diagrams
T6
T2
T5
T4
RXF#
RD#
T1
T3
Valid Data
D[7...0]
Figure 3.3 FIFO Read Cycle
Time
T1
Description
Minimum Maximum Unit
RD# Active Pulse Width
50
-
ns
ns
ns
T2
RD# to RD# Pre-Charge Time
RD# Active to Valid Data*
50 + T6
20
-
T3
50
Valid Data Hold Time from RD#
Inactive*
T4
0
-
ns
T5
T6
RD# Inactive to RXF#
0
25
-
ns
ns
RXF# Inactive After RD Cycle
80
Table 3.10 FIFO Read Cycle Timings
*Load = 30pF
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