FT240XQ-R FTDI, FT240XQ-R Datasheet - Page 28

• Manufacturer Part Number: FT240XQ-R
• Description: USB Interface IC USB to Parallel FIFO IC QFN-24
• Manufacturer: FTDI

Specifications of FT240XQ-R

• Rohs: yes
• Product: USB 2.0
• Data Rate: 12 Mbps, 480 Mbps
• Interface Type: USB
• Operating Supply Voltage: 2.97 V to 5.5 V
• Operating Supply Current: 8 mA to 8.4 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-24
• Tradename: X-Chip

8
The FT240X includes an internal MTP memory which holds the USB configuration descriptors, other
configuration data for the chip and also user data areas. Following a power-on reset or a USB reset the
FT240X will scan its internal MTP memory and read the USB configuration descriptors stored there.
In many cases, the default values programmed into the MTP memory will be suitable and no re-
programming will be necessary. The defaults can be found in Section 8.1.
The MTP memory in the FT240X can be programmed over USB if the values need to be changed for a
particular application. Further details of this are provided from section 8.2 onwards.
Users who do not have their own USB Vendor ID but who would like to use a unique Product ID in their
design can apply to FTDI for a free block of unique PIDs. See TN_100 – USB Vendor ID/Product ID
Guidelines for more details.
8.1 Default Values
The default factory programmed values of the internal MTP memory are shown in Table 8.1.
Parameter
USB Vendor ID (VID)
USB Product UD (PID)
Serial Number Enabled
Serial Number
Pull down I/O Pins in USB
Suspend
Manufacturer Name
Product Description
Max Bus Power Current
Power Source
Device Type
USB Version
Remote Wake Up
DBUS Drive Current
Strength
DBUS slew rate
Internal MTP Memory Configuration
Value
0403h
6015h
Yes
See Note
Disabled
FTDI
FT240X USB FIFO
90mA
Bus Powered
FT240X
0200
Disabled
4mA
Slow
Copyright © 2013 Future Technology Devices International Limited
FT240X USB 8-BIT FIFO IC Datasheet
Notes
FTDI default VID (hex)
FTDI default PID (hex)
A unique serial number is generated and
programmed into the MTP memory during device
final test.
Enabling this option will make the device pull down
on the FIFO interface lines when in USB suspend
mode (PWREN# is high).
Returns USB 2.0 device description to the host.
Note: The device is a USB 2.0 Full Speed device
(12Mb/s) as opposed to a USB 2.0 High Speed
device (480Mb/s).
Taking SIWU# low will wake up the USB host
controller from suspend in approximately 20 ms.
When enabled.
Options are 4mA, 8mA, 12mA, 16mA
Options are slow or fast
Document No.: FT_000626 Clearance No.:
Version 1.3
FTDI# 259
28