FT230XS-R FTDI, FT230XS-R Datasheet - Page 22

• Manufacturer Part Number: FT230XS-R
• Description: USB Interface IC USB to Basic Serial UART IC SSOP-16
• Manufacturer: FTDI

Specifications of FT230XS-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: 6.5 mA to 8.3 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SSOP-16
• Tradename: X-Chip

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The following sections illustrate possible USB power configurations for the FT230X. The illustrations have
omitted pin numbers for ease of understanding since the pins differ between the FT230XS and FT230XQ
package options.
All USB power configurations illustrated apply to both package options for the FT230X device. Please refer
to Section 9 for the package option pin-out and signal descriptions.
6.1 USB Bus Powered Configuration
Figure 6.1 Bus Powered Configuration
Figure 6.1 Illustrates the FT230X in a typical USB bus powered design configuration. A USB bus powered
device gets its power from the USB bus. Basic rules for USB bus power devices are as follows –
The power descriptors in the internal MTP memory of the FT230X should be programmed to match the
current drawn by the device.
A ferrite bead is connected in series with the USB power supply to reduce EMI noise from the FT230X and
associated circuitry being radiated down the USB cable to the USB host. The value of the Ferrite Bead
depends on the total current drawn by the application. A suitable range of Ferrite Beads is available from
Laird Technologies (http://www.lairdtech.com) for example Laird Technologies Part # MI0805K601R-10.
i)
ii) In USB Suspend mode the device should draw no more than 2.5mA.
iii) A bus powered high power USB device (one that draws more than 100mA) should use one of the
iv) A device that consumes more than 100mA cannot be plugged into a USB bus powered hub.
v) No device can draw more than 500mA from the USB bus.
USB Power Configurations
SHIELD
CBUS pins configured as PWREN# and use it to keep the current below 100mA on plug-in and
2.5mA on USB suspend.
On plug-in to USB, the device should draw no more current than 100mA.
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Copyright © 2013 Future Technology Devices International Limited
1
2
3
4
100nF
GND
10nF
47pF
Ferrite
Bead
VCC
GND
+
GND
4.7uF
47pF
VCC
GND
Document No.: FT_000566 Clearance No.: FTDI# 260
27R
27R
FT230X USB TO BASIC UART IC
100nF
USBDM
USBDP
VCC
RESET#
VCCIO
3V3OUT
FT230X
Version 1.2
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