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VV.2
VV.2
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October 12, 2020
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STM32L432KC GPIOs controlled by the RTC

  • October 12, 2020
  • 2 replies
  • 932 views

Helo.

I have a Nucleo-32 development board with STM32L432KC MCU.

In RM0394 , chapter "Real-time clock (RTC) applied to STM32L43x/44x/45x/46x devices only"

I found this:

"Output functions: RTC_OUT which selects one of the following two outputs:

– RTC_CALIB: 512 Hz or 1Hz clock output (with an LSE frequency of 32.768 kHz)...

...RTC_OUT, RTC_TS and RTC_TAMP1 are mapped on the same pin (PC13)....

...In addition, it is possible to remap RTC_OUT on PB2 pin..."

But in STM32L432KC datasheet ,chapter Pinouts and pin description, I can't found pins PC13, PB2. Moreover, in CUbeMX when I select STM32L432KC MCU ,on RTC tab in Pinout & confiruation, I found no anything about RTC_CALIB output. Where is my mistake or datashhet missunderstanding ?

Best regards, Volodymir.

This topic has been closed for replies.
Best answer by TDK

The UFQFPN32 chip is small and doesn't have those pins available. They are available on larger chip packages. The L432 is odd in that it's only available in that one chip package. You could use the L433 instead in the LQFP64 package (for example).

2 replies

TDK
TDKBest answer
October 12, 2020

The UFQFPN32 chip is small and doesn't have those pins available. They are available on larger chip packages. The L432 is odd in that it's only available in that one chip package. You could use the L433 instead in the LQFP64 package (for example).

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VV.2
VV.2Author
Associate
October 12, 2020

Thanks for fast reply.

My question is solved.

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