Best processor selection

[AClif]

Hi,

I am trying to select an STM32 for a project but am struggling a little with the selection tables and thought I would check to see if there is an easier way before I spend hours on repetitive tasks.

My fundamental requirements are: 

• 2 x ADCs (independent ADCs, NOT channels on a single ADC), 12-bit is fine
• 1 x DAC, 12-bit is fine
• 1 USART
• Smallest package possible that is not BGA.

A low power device would be nice, but is not essential.

The processing requirements are pretty small, so I am confident that any of your STM32 processors would do it.

Is there a way of seeing ALL of the STM32 processors in a single table? Equally, is there a way of seeing how many ADCs a device has, without going into the individual product pages? The selection tables for each sub-category have number of ADC channels, but not the number of actual ADCs, which is quite frustrating!

[After Forever]

Download STM32CubeMX and use its MCU Selector feature (File -> New Project).

https://www.st.com/en/development-tools/stm32cubemx.html

[AClif]

Hi After Forever, thanks for the swift response! The STM32CubeMX selector is great, thank you! I already had the program but had only used it with Nucleo boards.

It still has the issue where it doesn't tell you how many actual ADCs it has, but the features window above the selection table at least makes it quick to scan through the available processors.

Thanks!

[T J]

I use Digi for sorting MCUs..

in Digikey.com

search for "STM32"

then under more filters, select the packages that suit you.

apply filters

then sort price ascending.

then you can check the details of the processors listed,

work with the filters...

[AvaTar]

Sounds like a CM0/CM0+ would do for you. Like the F0 or L0 series.

You would need to check individually for the 2 x ADC + DAC feature, but there should be plenty of small packages.

[waclawek.jan]

There's also a javoid dedicated to the task:

https://www.st.com/en/development-tools/st-mcu-finder-pc.html

and even a mobile version

https://www.st.com/en/development-tools/st-mcu-finder.html

JW

[Piranha · Accepted solution]

Not that much options with those requirements, actually:

STM32F303Kx

STM32F334Kx

Letter K means 32 pin package.

[AClif]

Thank you everyone for your help! It's always fantastic to see a helpful, responsive community!