USB2SER Datasheet, PDF (1/28 Pages) Freescale Semiconductor, Inc – USB to UART Application Specific IC Single chip USB to UART Data Transfer

Freescale Semiconductor
Data Sheet: Advance Information
Document Number: USB2SERDS
Rev. 0, 05/2011
USB2SER Data Sheet
USB to UART Application Specific
IC
USB2SER
24-pin QFN
Case 1897
Introduction
The USB2SER is a USB to UART bridge controller on a
5 x 5 mm lead free QFN24. It is a simple low cost solution to
enable a USB for an embedded system with a UART port,
reducing external component counts. It supports USB 2.0 full-
speed and TTL RS232 or RS485 UART with options for
hardware flow control, Software Flow control (Xon-Xoff),
even or odd parity, and stop bits configuration.
Features
• Single chip USB to UART Data Transfer (RS232 or
RS485)
• USB specification 2.0 compliant, full speed
(12 Mbps)
• User programmable custom baud rates from 300 bps
to 115200 bps
• UART supports 8 bit data, 1 or 2 stop bits and odd,
even or no parity
• RESUME signal to request a remote wake-up and
SUSPEND output to indicate that the device is in
suspended mode
• Integrated 3.3 V regulator for a USB IO
• Integrated Power-On-Reset circuit
• Integrated 2 MHz – 48 Mhz clock multiplier PLL
• Supports 2 MHz, 4 MHz, 6 MHz, 8 MHz, 12 MHz,
and 16 MHz external crystals with automatic crystal
frequency detection
• USB bulk data transfer modes for data
communication
• 3 V to 5 V single supply operation
• UHCI / OHCI / EHCI host controller compatible
• Configurable USB VID, PID, and device
description strings in the internal flash
• Configurable password to protect the device from
additional parameter modifications
• Data formats supported 8 bits data, 1 and 2 stop bits
• Parity odd, even, no parity
• Hardware flow control (RTC / CTS) or Software
Xon/Xoff flow control
• RS485_TXEN signal to support RS485
• USB and UART activity pins to indicate
communication activity and fail sequences
Drivers support
The USB2SER can act as a CDC standard device that
eliminates the need for custom drivers for operation when the
flow-control is not needed (only an INF file is required).
For flow control support, COM emulator drivers are available
for:
• Windows XP 32-bits and 64-bits versions
• Windows Vista 32-bits and 64-bits versions
• Windows 7 32-bits and 64-bits versions
• Linux Kernel 2.6.34 and higher
Additionally to the drivers, a software configuration tool is
provided to customize the Product ID, Vendor ID, Product
strings, current consumption parameters and password
protection option, to prevent further modifications to the
device information. For driver installation and software go to:
The GUI and Driver Installer at www.freescale.com/usb2ser.
Package
USB2SER comes in a compact 5 x 5 mm Pb free RoHS
compliant QFN24.
This document contains information on a product under development. Freescale reserves the
right to change or discontinue this product without notice.
© Freescale Semiconductor, Inc., 2011. All rights reserved.