Microcontroller selection

[research]

Posted on May 26, 2017 at 07:07

Hello,

I am developing one application with high speed inputs and outputs.Peripheral requirement for application are as below:1. 4 PWM output with resolution 32bit and 2MHZ clock OR external clock source for PWM with 32bit resolution2. 8 external interrupt pins. Dedicated interrupt request for each interrupt3. One UART(for programming)4. One I2C (100kHz)5. Clock source : external crystal support, clock should be higher than 40MHz.6. Pin count : 32 to 487. Flash : 32kB to 128kB

Is any microcontroller available with these features?

[Amel NASRI · Accepted solution]

Posted on May 26, 2017 at 15:21

Hello

Kumbhar.Mukund

‌,

There is a large selection of STM32 microcontrollers which may answer your request.

I recommend you to use the 'MCU Finder' tool (

http://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-utilities/st-mcu-finder.html

,

http://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-utilities/st-mcu-finder-pc.html

or the one embedded in

http://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-configurators-and-code-generators/stm32cubemx.html

) to fine tune your choice and the select the suitable one(s).

-Amel

[Tesla DeLorean]

Posted on May 26, 2017 at 21:55

Most of the parts only support external crystals to 25-26 MHz, but will take an oscillator source of 50 MHz, check fHSEmax in the Data Sheet.

The EXTI pin interrupts frequently go to a single dispatch point, but the source can be identified and vectored quickly.

Four 32-bit PWM sharing a common clock/period is achievable in a number of parts, and rates well north of 2 MHz.

F401?