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STM32F103 - No Internal pull-up on the NRST pin

Question asked by samuel.poiraud.005 on Feb 23, 2017
Latest reply on Feb 24, 2017 by samuel.poiraud.005

Hi,

 

In the current datasheet of STM32F103 (DocID13587 Rev 17) it is written:

 

5.3.14 NRST pin characteristics

The NRST pin input driver uses CMOS technology.

It is connected to a permanent pull-up resistor, RPU (see Table 35).

 

In few project we did, we noticed there is no internal pull-up on this pin. (and we needed to add an external pull-up to ensure the mcu work).

 

Thanks!

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