topic Re: SPI at 25Mhz LPC MCU in LPC Microcontrollers

SPI at 25Mhz LPC MCU

msesrj — Tue, 04 Jun 2024 19:02:49 GMT

Hello,

I need assistance generating a continuous 25MHz SPI signal without gaps between data transmissions. Additionally, I need to be able to perform other tasks on the microcontroller simultaneously.

I tested this with both the LPC11A14 and LPC51U68. When I attempt to output SPI data and toggle an LED, the LED stops blinking if the SPI clock exceeds 3MHz, although the SPI signal itself is still present.

Can you provide guidance on how to achieve a continuous 25MHz SPI signal while allowing the microcontroller to handle other tasks?

Thank you!

Re: SPI at 25Mhz LPC MCU

Pavel_Hernandez — Wed, 05 Jun 2024 22:53:43 GMT

Hello, my name is Pavel, and I will be supporting our case, let me get into your case, when I have more information, I will contact you.

Best regards,
Pavel

Re: SPI at 25Mhz LPC MCU

Pavel_Hernandez — Fri, 07 Jun 2024 22:54:48 GMT

Hello, I apologize for the late response, did you test the example on the MCUXpresso IDE? there are some examples that you can open about the LPCOpen and run on the MCUXpresso IDE.

Best regards,
Pavel