SPI bus speed/frequency for Kinetis / K60F120

[PeterFromSweden]

Hi

It is not possible to select maximum frequency for SPI bus in Procesor Expert.

K60P144M150SF3RM chapter 3.9.5.2 clearly states that it is internal bus clock / 2.

Processor Expert Driver Suite 10.0.0 doesn't offer this. Is it wrong in Kinetis manual or in Processor Expert?

See pictures below.

/Peter

Original Attachment has been moved to: ProcessorExpert.pe.zip

[DavidS]

Hi Peter,

To add to the responses, the RM quite often speaks of the capability of the silicon IP module and not what was implement or specified differently.

Rule of Thumb is Section #3 of RM has what is implemented in the device.

Ex:

   Section #3 might say there are 3 SPI moduled and each has 3 chip selects.

   Module Section might say the SPI module can have 100 chip select (I'm exagerating to make point)

Unfortunately Section #3 doesn't include pin limitation and you must consult the respective Data Sheet.

For the K60 120MHz device you are using the Section 6.8.7 DSPI switching specifications has Host max frequency of 30MHz and as Slave 15MHz.

Hope this helps.

Regards,

David

[vfilip]

Hello,

could you please post here the ProcessorExpert.pe file from your project in order to analyze your issue?

best regards

Vojtech Filip

Processor Expert Support Team

[PeterFromSweden]

Hi

I updated the original question with requested attachment.

Regards

/Peter

[vfilip · Accepted solution]

Hello,

this is PEx issue and it would be fixed in the next release (new version should be available within two weeks). The list of pre-calculated values is not complete, however as workaround it should be possible to enter 30 MHz directly into Init.value field.

best regards

Vojtech Filip

Processor Expert Support Team