About TB

TB · 2021-04-30

I want to use an STM32G4 to control a BLDC motor with three (U-V-W) Hall Sensors (through a TI DRV8323S three-phase integrated gate driver). To be concrete, I am planning on using TIM1 on the STM as the interfacing timer to detect state changes (on U...

TB · 2020-07-29

TB · 2020-06-07

Hi all -Two questions:Are DRDY and INT on the LIS3MDL Open Drain or Push/Pull?Is DRDY active low or active high?Related Comment: I see in the datasheet that, using the IEA bit of the INT_CFG register, INT can be set active high or active low, but I ...

TB · 2020-05-26

Any chance STM32 MCUs will adopt native i3c support any time soon? Many new devices, including some from ST (like the LPS22HH), support it. It's a compelling (new-ish) standard.

TB · 2020-05-21

Hi guys -I am designing a motor control board around an STM32G474. Main power (for driving the voltage regulators, motor drivers, and ultimately the STM itself) will be provided by a large LiPo. Backup power (VBAT, to keep the RTC on the STM, and i...

TB · 2020-06-05

Hi Jo and Amel -I am quite excited about I3C. I am currently designing a highly-connected motor control board around the STM32G474VE, and dedicating an entire GPIO to handle the data ready condition from every connected slave device on I2C is killin...

TB · 2020-05-22

Hi JW - thank you so much for your feedback. Yes, we just got our STM32G474 nucleo board and will be attempting to test this out. After checking into my question #1 a bit further, the ML1220 cell can also put out 2 mA (see here: https://www.abcde.de/...

TB · 2020-05-21

"System reset does not affect the RTC domain" - that is totally what I wanted to hear. :) ok, good, we will go forward with this plan then. Thanks so much for the sanity check!

TB · 2020-05-21

Hi TDK - I can't get the device out of VBAT mode (i.e., "wake up" the STM) until I power up the main board, which energizes its voltage regulators and provides main power to the STM. So there is a bit of chicken and egg thing going here. When it is...

TB · 2020-03-17

Ok... Since it is on STM32cube I can at least begin considering it as a possibility for our design. Thanks so much for the update.

User statistics

User Activity

how to connect the interface timer to the PWM generating timer using DMA on a STM32G4 for BLDC motor coordination using three (U-V-W) Hall Sensors?

I'm breaking out the 0.8mm pitch BGA of a STM32G474VE using a dog-bone fanout and a 1.5 oz outer layer (so, need 6 mil trace/space widths if possible). To facilitate this, is a land diameter of 0.35mm for each ball ok? The datasheet recommends 0.4mm.

LIS3MDL: are DRDY and INT Open Drain or Push/Pull? Is DRDY active low or active high?

native i3c support

Using an STM RTC_OUT line for enabling/disabling the main power MOSFET on a board, which idles in VBAT mode when not in use

Re: native i3c support

Re: Using an STM RTC_OUT line for enabling/disabling the main power MOSFET on a board, which idles in VBAT mode when not in use

Re: Using an STM RTC_OUT line for enabling/disabling the main power MOSFET on a board, which idles in VBAT mode when not in use

Re: Using an STM RTC_OUT line for enabling/disabling the main power MOSFET on a board, which idles in VBAT mode when not in use

Re: Are the WLCSP versions of the STM32G4x3 and STM32G4x4 lines still on schedule to be released in Q1 2020, in light of the covid-19 situation?