+ Post New Thread
Page 1 of 4 1 2 3 ... LastLast
Results 1 to 20 of 75
  1. #1
    Junior Member level 1
    Points: 1,917, Level: 10

    Join Date
    Jul 2002
    Posts
    16
    Helped
    0 / 0
    Points
    1,917
    Level
    10

    usb to rs232 schematic

    Any body has USB to 232 converter circuit??.

  2. #2
    Member level 2
    Points: 3,568, Level: 14
    picman2's Avatar
    Join Date
    May 2001
    Posts
    51
    Helped
    2 / 2
    Points
    3,568
    Level
    14

    usb rs232 schematic

    I think you should consider to buy one already made.
    They are extremely cheap and you will save your time for more useful things.

    I use one from digitus (www.digitus.de) and I'm really satisfied with it

    PicMan


    1 members found this post helpful.

  3. #3
    Full Member level 2
    Points: 2,656, Level: 12

    Join Date
    Feb 2002
    Posts
    121
    Helped
    4 / 4
    Points
    2,656
    Level
    12

    usb to rs232 converter schematic

    Take a look at www.ftdichip.com.
    they have a USB 2 serial IC and
    a application note how to build a
    USB 2 rs232 converter


    1 members found this post helpful.

  4. #4
    Full Member level 1
    Points: 4,304, Level: 15
    webdog's Avatar
    Join Date
    Nov 2001
    Posts
    103
    Helped
    16 / 16
    Points
    4,304
    Level
    15

    rs232 to usb circuit

    You find the FTDI chips and eval boards in-stock at http://www.lawicel.com

    lots of information: http://homepage.hispeed.ch/ibhdoran/

    Have fun
    /WD



  5. #5
    Junior Member level 3
    Points: 2,790, Level: 12

    Join Date
    May 2001
    Posts
    31
    Helped
    0 / 0
    Points
    2,790
    Level
    12

    usb to rs232 ic

    Try Prolific USB to RS232 IC

    I had tried the FTDI Chip and Prolific PL2303 ,

    I think PL2303 much more better than FTDI (FT245BM , FT232BM),

    it cheaper and easy to use , smaller size , much more easy to install the software.

    PL2303 is the best choice for me, so try PL2303, you will like it.....

    See ==> www.prolific.com.tw



    •   AltAdvertisement

        
       

  6. #6
    Advanced Member level 4
    Points: 15,991, Level: 30

    Join Date
    Mar 2002
    Posts
    1,309
    Helped
    59 / 59
    Points
    15,991
    Level
    30

    usb to rs232 converter circuit

    I have three questions about Prolific PL2303.

    Do you know where to find application notes or sample schematics for Prolific PL2303?
    I can only find the Prolific PL2303 datasheet: http://tech.prolific.com.tw/visitor/...p?fid=17151518

    Is it possible to order samples of the PL2303?

    Where can I buy this device whithin the EU?

    Thanks in advance,
    ME



    •   AltAdvertisement

        
       

  7. #7
    Full Member level 1
    Points: 3,217, Level: 13

    Join Date
    May 2001
    Location
    Pays Bas
    Posts
    99
    Helped
    1 / 1
    Points
    3,217
    Level
    13

    rs232 to usb schematic

    There was a design in dutch Elektor May 2003 using FTDI chips:

    http://elektuur.o4s.com/Elektuur/NL/Products/Magazines.nsf/0/C92ECD5703AEF2EBC1256D160040D4C1/$File/020375-1.zip



  8. #8
    Newbie level 1
    Points: 1,718, Level: 9

    Join Date
    Jun 2003
    Posts
    1
    Helped
    0 / 0
    Points
    1,718
    Level
    9

    cygnal cp2101

    pls send shemas



  9. #9
    Advanced Member level 4
    Points: 15,991, Level: 30

    Join Date
    Mar 2002
    Posts
    1,309
    Helped
    59 / 59
    Points
    15,991
    Level
    30

    rs232 to usb ic

    Quote Originally Posted by usg01
    pls send shemas
    Which schematic are you talking about?


    Doesn't anybody have info about Prolific PL2303?

    Where can I find application notes or sample schematics for Prolific PL2303?
    I can only find the Prolific PL2303 datasheet: http://tech.prolific.com.tw/visitor/...p?fid=17151518

    Is it possible to order samples of the PL2303?

    Where can I buy this device?

    Regards,
    ME



  10. #10
    Junior Member level 3
    Points: 2,790, Level: 12

    Join Date
    May 2001
    Posts
    31
    Helped
    0 / 0
    Points
    2,790
    Level
    12

    digitus rs232 usb driver

    Here are the Prolific RS232 to USB transfer IC

    PL2303 and PL2313 Schematic files include ORCAD files and PDF files.

    Just share with you, my friends.......

    And I buy it in Taiwan , throught the Maxtek Technology Company
    Hsinchu office
    Tel: 886-3-5509778
    fax: 886-3-5509770
    www.maxtek-icrep.com.tw



    •   AltAdvertisement

        
       

  11. #11
    Full Member level 2
    Points: 3,081, Level: 13

    Join Date
    Dec 2001
    Posts
    125
    Helped
    11 / 11
    Points
    3,081
    Level
    13

    pl2303hxd schematic

    I use ready made US232 USB <> RS232 Converter cable, http://www.dlpdesign.com/usb/us232cable.html

    The circuit diagram is listed in the documentation



  12. #12
    Full Member level 6
    Points: 4,059, Level: 15
    Sobakava's Avatar
    Join Date
    Mar 2002
    Posts
    350
    Helped
    8 / 8
    Points
    4,059
    Level
    15

    usb to rs232 schematics

    Cssheu,

    There is a RS232 level converter with inverters in your circuit. (SP213EH)

    Does PL2303 work with inverted or non-inverted RS232 RXD and TXD signals?

    It is described RI, DTR, RTS , CTS, DSR, CD signals are active-low but there is no information about RXD and TXD....

    I am confused. Did you tested this schematic?

    Regards



  13. #13
    Super Member
    Points: 3,669, Level: 14

    Join Date
    Jan 2002
    Posts
    198
    Helped
    19 / 19
    Points
    3,669
    Level
    14

    diy usb rs232 converter

    Cygnal - CP2101: USB-to-UART Bridge (Unit Price: $5.70)
    Features
    • USB Spec 2.0 Compliant; Full-Speed (12 Mbps)
    • Integrated 512B EEPROM for Vendor ID, etc.
    • Integrated Transceiver; No External Resistors Required
    • Integrated Clock; No External Crystal Required
    • USB suspend supported via SUSPEND pins
    • Event Character & Line Break Condition Support
    • All Handshaking & Modem Interface Signals
    • Data Formats: 8 bit; 1 or 2 Stop bits
    • Parity: Odd, Even, No Parity
    • Baud Rates: 300bps to 921.6kbps
    • 512B Receive Buffer; 512B Transmit Buffer
    • Hardware X-On / X-Off Handshaking
    • 5x5mm MLP-28 Package; -40 to +85C

    http://www.cygnal.com/about/news_20030922.htm
    http://www.cygnal.com/products/CP2101.htm



  14. #14
    Full Member level 6
    Points: 4,059, Level: 15
    Sobakava's Avatar
    Join Date
    Mar 2002
    Posts
    350
    Helped
    8 / 8
    Points
    4,059
    Level
    15

    pl2303 application note

    I bought a data cable from a street seller for my cellular phone.

    It is a little box with a power LED. There is a small two sided PCB in it and it includes 25cm USB cable and 30cm cable to phone with a special phone battery-holder and pin type connector. There is a Prolific PL2303 in it.

    And it is only 3 USD without haggle... I belive I would buy it cheaper but I was amazed of the price.

    I think it comes from Far East or somewhere like that...



  15. #15
    Full Member level 6
    Points: 6,652, Level: 19

    Join Date
    Jul 2001
    Posts
    322
    Helped
    32 / 32
    Points
    6,652
    Level
    19

    usb rs232 converter schematic

    Cygnal VCP device drivers are required for CP2101 device operation and are only distributed as part of the CP2101EK evaluation kit. Therefore, a CP2101EK kit should be ordered before or at the time of the initial order of CP2101 devices.

    Cost of Evaluation Kit CP2101 = $49.00



  16. #16
    Advanced Member level 4
    Points: 15,991, Level: 30

    Join Date
    Mar 2002
    Posts
    1,309
    Helped
    59 / 59
    Points
    15,991
    Level
    30

    usb serial schematic

    Quote Originally Posted by svicent
    Cygnal VCP device drivers are required for CP2101 device operation and are only distributed as part of the CP2101EK evaluation kit. Therefore, a CP2101EK kit should be ordered before or at the time of the initial order of CP2101 devices.

    Cost of Evaluation Kit CP2101 = $49.00
    Have anyone ordered this kit or have the royalty free Virtual COM Port device drivers?



  17. #17
    Member level 1
    Points: 2,732, Level: 12
    jivega's Avatar
    Join Date
    Oct 2001
    Location
    South-America
    Posts
    35
    Helped
    0 / 0
    Points
    2,732
    Level
    12

    tusb3410 schematic

    Sabakava:
    What is the reference of your cellular phone?
    data cable



  18. #18
    Full Member level 6
    Points: 4,059, Level: 15
    Sobakava's Avatar
    Join Date
    Mar 2002
    Posts
    350
    Helped
    8 / 8
    Points
    4,059
    Level
    15

    diy usb rs232 converter

    there is no mark on the cable and box... I think it is a third party product... I'll but three data cables more to desolder PL2303s and use in my board... I draw ccsheu's PCB with MAX213.



    •   AltAdvertisement

        
       

  19. #19
    Member level 2
    Points: 1,912, Level: 10

    Join Date
    Dec 2003
    Posts
    48
    Helped
    1 / 1
    Points
    1,912
    Level
    10

    digitus usb rs232 driver

    hi
    someone please clear the topic as i am unable to get a complete solution on it too..

    is there any other described link ?

    thanks



  20. #20
    Member level 5
    Points: 28,409, Level: 41
    tobb's Avatar
    Join Date
    Sep 2002
    Posts
    87
    Helped
    7 / 7
    Points
    28,409
    Level
    41

    pl2303 circuit

    Hi .. is any one try TUSB3410 from texas instrument. I look at datasheet and it Demo board ,It looking good and it seem to be easy to build. They also provide firmware and software driver for it But i haven't try it yet. Is ahny one have experience with this chip?



--[[ ]]--