FT240XS-U FTDI, FT240XS-U Datasheet - Page 25

• Manufacturer Part Number: FT240XS-U
• Description: USB Interface IC USB to Parallel FIFO IC SSOP-24
• Manufacturer: FTDI

Specifications of FT240XS-U

• Rohs: yes
• Tradename: X-Chip

7
The following sections illustrate possible applications of the FT240X. The illustrations have omitted pin
numbers for ease of understanding since the pins differ between the FT240XS and FT240XQ package
options.
7.1 USB to MCU FIFO Interface
Figure 7.1 USB to MCU FIFO Interface
A typical example of using the FT240X as a USB to Microcontroller (MCU) FIFO interface is illustrated in
Figure 7.1. This example uses two MCU I/O ports: one port (8 bits) to transfer data and the other port (4
or 5 bits) to monitor the TXE# and RXF# status bits and generate the RD# and WR strobes to the
FT240X, when required.
Using PWREN# for this function is optional.
Application Examples
USBDM
USBDP
SHIELD
5
Vcc
100nF
47pF
4.7uF
GND
1
2
3
4
GND
+
47pF
GND
+
10nF
Ferrite
Bead
Copyright © 2013 Future Technology Devices International Limited
GND
100nF
VCC
27R
27R
VCC
USBDM
USBDP
VCCIO
RESET#
3V3OUT
FT240X USB 8-BIT FIFO IC Datasheet
A
G
N
D
Document No.: FT_000626 Clearance No.:
FT240X
GND
G
N
D
PWREN#
RXF#
TXE#
WR#
RD#
D0
D1
D2
D3
D4
D5
D6
D7
Vcc
10k
Version 1.3
I/O17
I/O10
I/O11
I/O13
I/O14
I/O15
I/O16
FTDI# 259
I/O12
I/O20
I/O21
I/O22
I/O23
I/O24
VCC
25