STM32 MCUs Products

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is anybody familiar with STM32F446RE and external clock ?

I tried to sort through the manual. When I choose external clock do i actually connect anything to the PH0 and PH1 pins and what kind of oscillator.I see that there is already what looks like 8 MHz crystal is this one I am connecting when using exter...

MNapi by Senior III
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Problem with duty cycle measurement

Hello everybody,I wanted to measure the duty cycle (tone) of a PWM signal with input capture mode. Unfortunately, it works only almost up to 65% of the duty cycle(Ton). otherwise will the T_off measured instead of Ton. does anyone have an idea what c...

Samuel1 by Associate III
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  • 1 replies
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SPI with non standard clk cycles.

Is there a way to have spi just send an abnormal number of clock cycles as opposed to just 8 cycles at a time? Is bit banging the only way? Can the LL library be configured or coded to do such a thing?

Andrew C by Associate II
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Sending 9 bit data using SPI STM32F7

Hi I'm using STM32F7 series microcontroller. Is it possible to send 9 bit data using SPI? the reason is i have to send 8 bit data along with command bit (ie 9th bit). I have seen some option in datasheet like we can chose the data length between 4...

PBU by Associate III
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Resolved! STM32F091, GPIO, USART

If switching GPIOA mode from 'General purpose output' (set to 1) to Alternate function USART Tx:Will level of pin break down for a short time or will it stay rock solid at "1" ?Rem. One has to change MODERy from 01 to 10. One may go via 01 -> 00 -> 1...

JuM by Senior
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  • 4 replies
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Generation file Linker (xxxx_FLASH.ld) is empty

Posted on March 04, 2015 at 11:20Hi The latest version of CubeMx in Ubuntu generates (export TrueSTUDIO) file Linker (xxxx_FLASH.ld) empty. I have tested this on STM32L0 and STM32F4. In Windows it all works. Has anyone encountered this problem? B...

drake by Associate II
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  • 4 replies
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Connecting a DRAM to an STM32

Hello, all!I need to explore an option to connect a DRAM to an MCU, and still ahve at least 40 PIOs and 16 AIOs left. and would like your input:Is there a comprehensive tutorial on how to connect and use a DRAM with an STM32?Any specific keywords I s...

ISeed by Senior
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  • 8 replies
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