The RD232R is a USB to serial UART
interface with 南妹the following advanced
features:
• Single chip USB to asynchronous seria樂花l data
transfer interface.
• Entire USB pro們街tocol handled on t理商he chip. No USB
specific firmware programming r腦遠equired.
• Fully integrated 1她舊024 bit EEPROM storing dev媽飛ice
descriptors and CBUS I/O configurati黑行on.
• Fully integrated USB termi聽事nation resistors.
• Fully integra刀間ted clock generation with no externa白司l
crystal required plus optional cl拿票ock output
selection enabling a物快 glue-less interfac物放e to
external MCU or FPGA.
• Data transfer rates from 300 baud新道 to 3 Mbaud
(RS422, RS485, RS232 ) at T煙睡TL levels.
• 128 byte receive buff票師er and 256 byte transmit
buffer utilising buffer 光坐smoothing technology to河愛
allow for high data throughput友答.
• CORECHIPS’s royalty-free V一作irtual Com Port (VCP)
and  Direct  (D2XX)&中玩nbsp; drivers  eliminat城道e  the
requirement for USB driver d林少evelopment in most低些
cases.
• Unique USB CoreChips-ID™ feat能學ure.
• Configurable CBU你服S I/O pins.
• Transmit and recei我朋ve LED drive signals線土.
• UART interface 就還support for 7 o用路r 8 data bits, 1 or 2
stop bits and odd / even / ma分木rk / space / no parity
• FIFO receive and transmit buffers放線 for high data
throughput.
• Synchronous and asynchronous bit b費道ang interface
options with RD# and WR# 美舞strobes.
• Device supplied pre-progra理雪mmed with unique USB
serial number.
• Supports bus po畫技wered, self powered and high-
power bus powered USB configurati拍好ons.
• Integrated +3.3V level converter f在學or USB I/O.
• Integrated level converter on UART 市分and CBUS for
interfacing to between +1.8V an報物d +5V logic.
• True 5V/3.3V/了區2.8V/1.8V CMOS drive ou房上tput and
TTL input.
• Configurable I/O pin output dri能媽ve strength.
• Integrated power-on-reset林畫 circuit.
• Fully integrated AVCC supply fil車員tering - no external
filtering required.
• UART signal inversion option.
• +3.3V (using 河湖external oscillat嗎行or) to +5.5V (internal
oscillator) Single Supp但老ly Operation.
• Low operating and爸秒 USB suspend current.
• Low USB bandwidth con這術sumption.
• UHCI/OHCI/EHCI host c就上ontroller compatible.
• USB 2.0 Full Speed compatible.
• -40°C to 85°C extended operating te書金mperature
range.
• Available in compact Pb-free 2地能8 Pin SSOP and
QFN-32 packages (bo冷機th RoHS compliant).