UART & low power modes

eltury

Genius 3330 points

Other Parts Discussed in Thread: MSP430F5510

Which uses less power:

Holding the UART in reset or

Deselecting the function.

Thanks.

over 10 years ago

0 Clemens Ladisch over 10 years ago

Guru 323160 points

Which UART? Which chip? And what do you mean with "deselecting the function"?

0 eltury over 10 years ago in reply to Clemens Ladisch

Genius 3330 points

Oops. Sorry for the incomplete info. MSP430F5510, USCI. Port select function - turning the pins back to GPIO.

0 Dennis Eichmann over 10 years ago

Guru 74080 points

"Deselecting the function" is disconnecting the UART-lines from the pins. The module itself will stay active, so setting it into reset is the correct choice. And remember that you should not set GPIOs to input direction while letting them float. Better set them to output direction low or high. When as input, tie them to Vcc or GND.

0 eltury over 10 years ago in reply to Dennis Eichmann

Genius 3330 points

Thank you. Much appreciated.

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UART & low power modes