FT231XS-R FTDI, FT231XS-R Datasheet - Page 32

• Manufacturer Part Number: FT231XS-R
• Description: USB Interface IC USB to Full Serial UART IC SSOP-20
• Manufacturer: FTDI

Specifications of FT231XS-R

• Rohs: yes
• Product: USB 2.0
• Data Rate: 12 Mbps, 480 Mbps
• Interface Type: UART, 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: SSOP-20
• Tradename: X-Chip

8
The FT231X 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
FT231X 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 FT231X can be programmed over USB if the values need to be changed for a
particular application. Further details of this are provided from section 0 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.
Pull down I/O Pins in USB
Serial Number Enabled?
Max Bus Power Current
USB Product UD (PID)
DBUS Schmitt Trigger
USB Vendor ID (VID)
Manufacturer Name
DBUS Drive Current
Product Description
Internal MTP Memory Configuration
Remote Wake Up
DBUS slew rate
Serial Number
Power Source
USB Version
Device Type
Parameter
Suspend
Strength
Enable
Copyright © 2013 Future Technology Devices International Limited
FT231X USB UART
Bus Powered
See Note
Disabled
Enabled
FT231X
Normal
0403h
6015h
90mA
Value
0200
FTDI
Slow
4mA
Yes
FT231X USB TO FULL HANDSHAKE UART IC
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 UART 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 RI# low will wake up the USB host controller
from suspend in approximately 20 ms.
Options are 4mA, 8mA, 12mA, 16mA
Document No.: FT_000565 Clearance No.:
Options are normal or Schmitt
Options are slow or fast
Notes
Datasheet
Version 1.2
FTDI# 261
32