32-bit MCU-family inquiry

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Hi everyone!

This is my first post here
I'm interested in making a platform which has an 32-bit MCU as the centralcomponent. This platform is supposed to be configurable, i.e. do thingsthat an 8-bit MCU can handle OR do more advanced signal processing. What I have come up with is ARM Cortex M.
From what I've read on theinternet is that NXP has pin- & software-compatible devices in Cortex M0, M3 and M4. In addition, STMicroelectronics will have the same this year, theycurrently only have Cortex M3 and M4.

I would like to hear some reviews from you guys on the NXP and ST devices. What would you recommend if you don't want to recommend these, Renesas, Microchip etc. I am open to all suggestions. I don't have special criterias at this point, not more than low cost and low power consumption. But those are almost always criterias, I guess.

Really appreciate any input!!

/P
 

ARM is the recommended one for 32bit dsp application.
both nxp and st have versions that suits your requirement.
you can decide which one based on cost per piece and development tools cost and support provided to you for your requirement.
 

I have used NXP LPC1768 and ST STM32103Z. I see some issue with STM32 SDIO. Refer ERRATA sheet for STM32103Z. Below is the link, page no. 32. :

https://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/ERRATA_SHEET/CD00197763.pdf


It depends on your requirement, whether you want to use SPI or SDIO interface. For Example If you are doing any WiFi project and your throughput requirement is high then you can use SDIO and if your throughput requirement is low you can use SPI interface.
 

If you've previously used Microchip PICs, you could use the PIC32. Although it's not based on the ARM architecture, I wouldn't call it weak. This might be an easier approach for you.

However, if all is new to you, I would suggest you go with the ARM controllers.

I haven't used the ARM controllers myself, so I can't recommend any. However, besides NXP and ST controllers, I've heard good stuff about the Stellaris. You might take a look at that.

Stellaris ARM Cortex-M | ARM Microcontroller | ARM MCU

Hope this helps.
Tahmid.
 



Here are some interesting readings:

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