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Forum Index : Microcontroller and PC projects : Micromite pin 1 resistor

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Lee3
Regular Member

Joined: 17/09/2014
Location: Australia
Posts: 57
Posted: 12:54pm 27 Sep 2014
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Hi there
I've read in Silicon Chip and on here that pin 1 can be connected to Vcc directly, or via a 10k resistor. Does it matter? Is there any particular reasons why I should use a resistor??
I'm prototyping a small project, will be handy to leave pins 1 and 28 shorted with the stripboard trace under the chip if I don't need to use a resistor.... :)
Thanks
Lee
 
Geoffg

Guru

Joined: 06/06/2011
Location: Australia
Posts: 3272
Posted: 01:07pm 27 Sep 2014
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Microchip recommend that you use a resistor. It could be because you can then program the chip in circuit or it might be to limit the effect spikes on the power rail.

I often connect pin 1 direct to 3.3V with no problems at all.

Geoff
Geoff Graham - http://geoffg.net
 
hitsware
Guru

Joined: 23/11/2012
Location: United States
Posts: 535
Posted: 01:21pm 27 Sep 2014
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If you use a resistor, you can short it to ground for a reset.
 
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