smd crystal(quartz) for LPC1549

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smd crystal(quartz) for LPC1549

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iharihar
Contributor I

Could I use CSTNE12M0GH5L000R0

12 Mhz smd crystal (quartz) for  LPC1549 with  USB(CDC) and CAN interfaces application?

This quartz  has frequency tolerance  0.07% and frequency stability  0.11%,

the built-in capacitors in case of  the part  are 33 pF (Uoscin -= 1.08V, Uoscout =1.3V

Before I used PRQC12.00CR1010V00 smd quartz with 10 pF built-in capacitors

(Uoscin -= 1.0V, Uoscout =1.5V) and  frequency tolerance  0.1% and frequency stability  0.1%.

But it is not available now.

NXP also recommends the quartz with the external capacitors  7-10 pF.

in R_10075 "Driving LPC1500 with EPSON Crystals"

 

 

 

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gusarambula
NXP TechSupport
NXP TechSupport

Hello iharihar,

We do not have a list of other recommended crystals you may use other than the ones listed on the R_10075 document and those used in our boards. I would strongly recommend using a crystal that is similar in characteristics to those recommended, especially if you will be using USB and CAN.

From what I would see on the CSTNE12M0GH5L000R0 datasheet, it has both a much higher load capacitance and frequency tolerance. This would affect the drive load and problems with the high-speed interfaces, so I would recommend looking for a crystal with similar properties as those on the list. You may look for the datasheet of the recommended crystal for comparison.

My apologies for the inconvenience.

Regards,
Gustavo