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Date: Thu, 09 Jan 2003 11:56:27 +0100
From: Rene Tschaggelar
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Subject: Re: 12 bit a/d converter to 8 bit mcu?
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> I have a 12 bit analog-to-digital converter I need to interface to an
> 8-bit Risc processor through its 8-bit Usart. I know how to read in
> 8-bit data, but the received data appears higher valued than it should
> when I'm sampling off 12-bit data. I believe the mcu's 8-bit receiver
> is sampling the 8 first and most significant bits. Could I be missing
> something like a few of the more significant bits?
Believing is not sufficient in this case.
UART connected ADCs are very unlikely.
Usual are 3 & 4 wire interfaces (din,dout,clk,cs).
The timing and states according to the datasheet have to be met exactly.
Ing.Buero R.Tschaggelar - http://www.ibrtses.com
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