connecting AD7605-4BSTZ with stm32h7

[Ali9]

I want to connect the AD7605-4BSTZ ADC (operating from +10V to -10V) with the STM32H743. I plan to use a parallel connection for 16 bits to achieve high accuracy, and I also want to utilize DMA. I need to configure the microcontroller in STM Cube IDE to use this connection. Additionally, I would like to simulate the setup before starting the manufacturing process.

[Andrew Neil]

So this: https://www.analog.com/en/products/ad7605-4.html ?

It's an AD (Analog Devices) product - nothing to do with ST - so you need to go to AD for questions about their product.

AD provide software resources - drivers etc:

https://www.analog.com/en/products/ad7605-4.html#:~:text=Sheet%20(Rev.%200)-,Software%20Resources,-All

There is Applications Information in the Datasheet - the interfaces are described there:

https://www.analog.com/media/en/technical-documentation/data-sheets/AD7605-4.pdf#page=23

 

You need to study those sections - they define what you need to implement in the host microcontroller.

The AD7605 neither knows nor cares what microcontroller you use - it just has to follow those specifications.

 

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@Ali9 wrote:

 I would like to simulate the setup before starting the manufacturing process.

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What do you mean by, "simulate" ?

The usual approach would be to get the manufacturer's Evaluation Kit, and use that to gain familiarity with the operation of the product.

You would then connect that to a Dev Kit for your chosen microcontroller to prototype your software.

For an STM32H743, you could try a NUCLEO-H753ZI:

https://www.st.com/en/evaluation-tools/nucleo-h753zi.html 

 

PS:

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@Ali9 wrote:

I plan to use a parallel connection for 16 bits to achieve high accuracy, 

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Does the choice of interface affect the accuracy?

[mƎALLEm]

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@Andrew Neil wrote:

PS:

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@Ali9 wrote:

I plan to use a parallel connection for 16 bits to achieve high accuracy, 

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Does the choice of interface affect the accuracy?

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Indeed. The interface is just a medium to transfer what was already converted to a digital value.

The only thing that can differ is the throughput not the accuracy. Parallel interface is faster than the serial interface but need to check the ADC datasheet.

[mƎALLEm]

If you will use FMC, you need to synchronize the reading from that ADC:

And I recommend to disable the cache of the FMC memory region on which the ADC will be mapped using MPU.