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I2C SDA Pullup Causes STM32G473xx Family to Lockup

I started a new project using an STM32G473CB in the QFN48 package. I've used this and other G4 chips for many other projects and never encountered this issue. This issue occurs with all 3 flash size variants (CB, CC, and CE).I've replicated this issu...

SSpen by Associate II
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  • 8 replies
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Resolved! STM32 with PT4115 Dimming

I create a custom board to use PT4115 to control LED. This PT4115 can be control with PWM or external DC on DIM pin. According to spec, the DIM range is 0.3-2.5V.I tested the board by I short the DIM pin to GND and the LED turn off.So it show the boa...

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SEng.1 by Associate II
  • 1372 Views
  • 6 replies
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Resolved! USART not working on STM32L152C Discovery board

Hello ST community!I'm working with the STM32L152C Discovery board and would like to create a simple USART example. I have developed USART drivers in the past, but this time they are not working with the disco board. It is possible that it has to do ...

JPabl.1 by Senior
  • 600 Views
  • 2 replies
  • 1 kudos

Compatibility doubts about I2C SCL SDA between a Slave (STM32L0) with VDD=3V3 & a Host with VDD=1V8 , pull-up resistors on the Host side.

Dear ST Community,I do have a doubt regarding an I2C communication between my STM32L031K6Tx that is the slave and powered with VDD=3V3 and a host that is powered with 1V8. Pull-up resistors are connected to 1V8 (host side).I did a functional test and...