+1 vote
asked by
What does the HRST pin on M20050 really do?
After resetting and un-resetting (pin 10, HRST of M20050), the M20050 comes back on line with it's previous settings (rather than power up default settings).  The data sheet doesn't address what the real behavior is.  The M20050 HRST (pin 10) seems to be more of a sleep mode pin.   Is there any further information on what this pin really does?

Please log in or register to answer this question.

1 Answer

+2 votes
answered by
Hi , The HRST pin is used to restart the module. this forces a volatile RAM data loss. However the Non-volatile backup RAM content is not cleared and can still provide a fast TTFF.

to reset the module to a default configuration you can use PMTK command 104 (PMTK_CMD_FULL_COLD_START).

Meet the moderators


Chris Tomlin
Antenna Applications Director, Antenova

Chris develops some of the smallest antenna modules and antennas in the world. He leads Antenova's R&D team and supports customers all over the world


Geoff Schulteis
Senior Antenna Application Specialist, Antenova

Geoff has 19 years' worth of antenna design and OTA measurement experience. He has an intricate knowledge of FCC and world carrier requirements.


Dan Dobransky
Senior Antenna Applications Specialist

Dan is an antenna integration specialist. He has a wealth of design-in and antenna development experience, which he uses to make sure our customer's products thrive


Antennas: The Comparison Guide

Find the perfect antenna for your project