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RobG

Oscillator Booster Pack

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This is a little Booster Pack which can be used to calibrate MPS430's internal clock (it's main purpose,) or as a HF ACLK source.

I have 2 designs in mind, one with 8 by 2 dividers and one with 10 by 2 and 2 by 5 dividers.

With 16MHz crystal, the first one would give me up to 9 frequencies (I think I will make only 4 available):

16, 8, 4, 2, 1MHz, 500, 250, 125, 62.5kHz.

The second one up to 33 frequencies:

16, 8, 4, 2, 1MHz, 500, 250, 125, 62.5, 31.25, 15.625kHz

3.2, 1.6MHz, 800, 400, 200, 100, 50, 25, 12.5, 6.25, 3.125kHz

640, 320, 160, 80, 40, 20, 10, 5, 2.5, 1.25kHz, 625Hz

 

Oscillator will feed P1.0 or P2.6 (XIN)

 

I think I will also make it available as a kit for $6-$8.

ICs will be SOIC, other parts through hole.

 

post-73-0-95962400-1355268311_thumb.pngpost-73-0-05882500-1355268313_thumb.png

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Would it be possible to overlap smd-pads at least on capacitors? It could basically be just a solder mask opening? I think many of us have smd-components which could then be used too :)

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RobG there is internal prescaler in msp430. So if you have 16MHz you basically have 8/4/2MHz also, if you have 1MHz you have 500/250/125KHz also ... and so on.

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