[DCC pin nrf52]

[annapalu]

Hi all,

it's possible to use a DCC pin to power an external element (like a led, for example)? If, yes what is the maximum voltage that we can have? It's V battery or greater?

Thank you, Anna

[John]

If you are specifically referencing the DCC pin, I don't think you can use that to power an external element. If you mean powering something via a GPIO pin, then yes you could do something like lighting and LED. The voltage output depends on the power supply to the chip. See Table 3 in the 1.0 version of the product specification.

[annapalu]

Hi John,

Thank you for the answer, I refer to DCC pin output. Table 2, pin 47 DCC( DC/DC regulator output pin). SO the maximum voltage depends from supply voltage? ( For example if i use a buttery of 3V, i can have a voltage output of 3V).

Thank you, Anna

[MartinBL]

Hi,

You should not use the DEC1-DEC4 pins to power anything external. The internal power manager is continuously monitoring which modules are being used and optimizes the regulator scheme based on that. Hence, since the manager is not actually measuring the current, but rather counting modules, it will not work optimally if you connect anything to the DEC pins.

[Carsten Wulff]

The DCC pin is a PWM output at 8MHz, and cannot power external circuits directly.