Testing Low-Power Wireless Sensor Links with the MC33594FTA

Jordan1x — Thu, 06 Nov 2025 17:34:22 GMT

Hi everyone,
I’m currently experimenting with a low-power wireless sensor project using the MC33594FTA RF transceiver. The idea is to build a simple point-to-point telemetry link for temperature and voltage monitoring in remote enclosures without needing Wi-Fi or LTE.

So far, I’ve managed to get stable communication at 433 MHz using the demo configuration, with the MCU sleeping between bursts to save power. I’m impressed by how sensitive the receiver is, I’m getting clean data over 80 meters indoors. However, I’m still fine-tuning the SPI interface timing. the MISO line occasionally returns partial data when the transceiver exits standby.

I’m also planning to test pairing multiple nodes on separate IDs using the address filter feature. Has anyone here worked with that setup before? I’m curious how the MC33594 handles packet collisions or overlapping transmissions when multiple transmitters are active.

Any tips on optimizing for low-current operation or best antenna matching practices for this chip would be greatly appreciated. I’ll share some scope traces once I finish the stability tests.

Thanks

Re: Testing Low-Power Wireless Sensor Links with the MC33594FTA

Ricardo_Zamora — Fri, 07 Nov 2025 15:34:54 GMT

Hello,

Hope you are doing well. I apologize for the inconveniences, but since this device is No Longer Manufactured, there is no support for it. (MC33594)

I would recommend going with the person that gave you this IC.

Best Regards,

Ricardo

topic Re: Testing Low-Power Wireless Sensor Links with the MC33594FTA in MCX Microcontrollers

Testing Low-Power Wireless Sensor Links with the MC33594FTA

Re: Testing Low-Power Wireless Sensor Links with the MC33594FTA