MSP430FR6879: Internal pullup setting for RST pin

Conor

Part Number: MSP430FR6879
Other Parts Discussed in Thread: MSP-FET

Hi,

Please teach me about the RST pin of MSP430FR6879.

When RST pin is pulling up with an external 47kΩ to use MSP-FET, can the internal pullup of the RST pin is enabled or disabled ?

Thanks,

0 Allen Gao over 4 years ago

Hi Koki，

internal resistor could disable by SYSRSTRE BIT

0 Conor over 4 years ago in reply to Allen Gao

Guru 13285 points

HI Allen,

It's not recommended to use an external register to enable the internal register as well, right?

0 Allen Gao over 4 years ago in reply to Conor

Hi Koki,

It does matter use external pull up resistor with the internal pull up enable.

0 Conor over 4 years ago in reply to Allen Gao

Guru 13285 points

Hi, Allen

As a workaround for errata (PORT28), there is a description that an external pull-down resistor is added to the TEST pin.

Please let me know if there is a recommended range of pulldown resistor within the writable range of MPS-FET and MSP-FET430UIF.

Thanks,

Koki

0 Allen Gao over 4 years ago in reply to Conor

Hi Koki,

Rang of 20K~50K is fine for the pull down resistor.

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