help on AD7730 INTERFACE

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jujeesh_123

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ad7730 project

hi..all..i am doing a project on electronic weighing machine.for that i am using analog devises AD7730 and PIC 16f877a mcu.While doing spi i can write and read the DAC register of AD7730,which is 8 bit wide.But i cannt do it on mode reg of ad7730,which is 16-bit wide.is it possible to transmit/receive 16 bit data throuh 8 bit wide spi ?pls send its guidelines..
 

ad7730 example

hi,

Yes, surely it's possible to send/receive more than 8 bits... Here is an example:

SHIFTOUT DATAin,SCLK,MSBFIRST,[$02] 'write to communication register setting next operation as write to mode register.


SHIFTOUT DATAin,SCLK,MSBFIRST,[$3080\16] 'write to mode register starting continuous conversion for 10mV input range,unipolar,16 bit data word and 5V reference.

I hope it is useful
 

ad7730 sclk

Hello brothers;
I can t comunicate with ADE7754, I use a PIC16F876, and use SPI with the MSSP; Can you help me with code of spi?? thanks....
 

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