Problem about microcontroller with RS485 and DAC ADC

Oct 31, 2003 6 Replies
A

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



Thanks


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M

For Rs-485 you should use 75176 for converting TTL levels (UART) to RS485.

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B

In a flurry of electrons Alentanic spake thus:

No. 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 B dot Fairchild at Dial dot Pipex dot Com "But apart from that Mrs Lincoln, how did you enjoy the play?"
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S

Or properly protect it so it doesn't ever get zapped.

Best regards, Spehro Pefhany

"it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
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D

GOAL Semiconductor have some devices with RS-485 transciever ON THE CHIP...

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regards

Dejan

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S

Nice. Yet another 8051.. Thanks.

Best regards, Spehro Pefhany

"it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
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M

I appologize for this reply so do not take it as offensive.

Dejan, where are you from, Croatia?

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