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Problem about microcontroller with RS485 and DAC ADC

Discussion in 'Embedded' started by Alentanic, Oct 31, 2003.

  1. Alentanic

    Alentanic Guest

    Hi All:

    I'm making an application sending command via RS-485 to a
    microprocessor using DAC to send Voltage signal, ADC to receive
    feedback signal.

    I've found some 51 families have both DAC and ADC on one chip. But I
    ‘ll need other chips to be the RS-485 interface.

    Is there any microcontroller containing RS-485 interface and more
    than 2 8bits ADC and a DAC (4bits or more will do the job) in one
    signal chips

    Alentanic, Oct 31, 2003
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  2. Alentanic

    MArk Guest

    For Rs-485 you should use 75176 for converting TTL levels (UART)
    to RS485.
    MArk, Oct 31, 2003
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  3. In a flurry of electrons Alentanic spake thus:
    Best to use a seperate chip for RS-485 (=cheap chip). Like that, if it
    gets 'zapped' you don't kill the micro (=expensive chip).
    Brian Fairchild, Oct 31, 2003
  4. Or properly protect it so it doesn't ever get zapped.

    Best regards,
    Spehro Pefhany
    Spehro Pefhany, Oct 31, 2003
  5. GOAL Semiconductor have some devices with RS-485 transciever ON THE CHIP...


    Dejan Durdenic, Oct 31, 2003
  6. Nice. Yet another 8051.. Thanks.

    Best regards,
    Spehro Pefhany
    Spehro Pefhany, Oct 31, 2003
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