I found the TIM3 of the G070 chip has 32bits Cnt register and ARR register in Reference manual. However, I can only configure the Low 16bits of these registers in STM32CubeIDE which means the max value of these registers is 65535 instead of 2^32 - 1. Why

[TDK]

TIM3 is a 16-bit timer per the reference manual and datasheet.

 

The CNT register might be 32-bits, but only the lower 16 bits are usable.

[fhu.11]

this is the TIM3 register map which means only TIM3 has 32bits Cnt and ARR register

[TDK · Accepted solution]

That doesn't say TIM3 is 32 bit.

It's actually copy/pasted from the STM32G0x1 reference manual, which has TIM2 (a 32-bit timer) and lists TIM2/TIM3/TIM4 in the same section. However, the STM32G0x0 doesn't have TIM2, so they sloppily removed all references to TIM2 and left inconsistencies like this.

 

TIM3 is 16 bits.

[fhu.11]

oh I see !:face_with_tears_of_joy:

Thank you very much �?:beaming_face_with_smiling_eyes: