We have been happy to use chipkit max32 for quite some time now. Now we wanted to experiment a design that uses parts of the max32 circuitry. It turned out that when we have the crystal oscillator FQ7050B-8.000 (*1) connected to PIC32MX795F512, it uses an internal oscillator instead, and it runs slow. The model for the crystal oscillator is the one specified in chipkit schematics file (*2). If we replace it with the physical oscillator circuit removed from one of our chipkit max32 boards, controller performance becomes just as fast as in max32, and it is using the external oscillator the way it should.
Is the external oscillator X1 on max32 something other than the one mentioned in the schematics (*2)? If so, could someone please specify its make and model.
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metso 0
hi,
We have been happy to use chipkit max32 for quite some time now. Now we wanted to experiment a design that uses parts of the max32 circuitry. It turned out that when we have the crystal oscillator FQ7050B-8.000 (*1) connected to PIC32MX795F512, it uses an internal oscillator instead, and it runs slow. The model for the crystal oscillator is the one specified in chipkit schematics file (*2). If we replace it with the physical oscillator circuit removed from one of our chipkit max32 boards, controller performance becomes just as fast as in max32, and it is using the external oscillator the way it should.
Is the external oscillator X1 on max32 something other than the one mentioned in the schematics (*2)? If so, could someone please specify its make and model.
Best,
metso
*1 https://www.digikey.com/product-detail/en/fox-electronics/FQ7050B-8.000/631-1029-1-ND/1024734
*2 https://reference.digilentinc.com/_media/reference/microprocessor/max32/chipkit_max32_sch.pdf
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