FT245BL-REEL FTDI, FT245BL-REEL Datasheet - Page 22

• Manufacturer Part Number: FT245BL-REEL
• Description: USB Interface IC USB to Parallel FIFO IC LQFP-32
• Manufacturer: FTDI
• Type: USB to Parallel FIFOr

Specifications of FT245BL-REEL

• Mounting Style: SMD/SMT
• Package / Case: LQFP
• Operating Supply Voltage: 3 V to 5.25 V
• Description/function: USB to Parallel FIFO IC LQFP-32
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Operating Temperature Range: 0 C to + 70 C
• Supply Current: 25 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 12
Microprocessor Interface Example
Figure 12 illustrates a typical interface between the FT245BL and a MicroController (MCU). This examples uses two
IO Ports of the MCU, one port (8 bits) to transfer data and the other port (4 / 5 bits) to monitor the TXE# and RXF#
status bits and generate the RD# and WR strobes to the FT245BL as required. Optionally, SI / WU can be connected
to another IO pin if this function is required. If the SI / WU function is not required, tie this pin of the FT245BL to
VCCIO. If the MCU is handling power management functions, then PWREN# should also be connected to an IO pin of
the MCU.
The 8 data bits of Port 1 can be shared with other peripherals when the MCU is not accessing the FT245BL.
DS245BL Version 1.7
FT245BL
FT245BM
© Future Technology Devices Intl. Ltd. 2005
SI / WU
RXF#
TXE#
RD#
WR
D0
D1
D2
D3
D4
D5
D6
D7
25
24
23
22
21
20
19
18
16
15
14
12
11
( Optional )
FT245BL USB FIFO ( USB - Parallel ) I.C.
Microcontroller
IO10
IO11
IO12
IO13
IO14
IO15
IO16
IO17
IO20
IO21
IO22
IO23
IO24
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