topic Re: LX2080 in LPC Microcontrollers

LX2080

YY2410 — Tue, 09 Sep 2025 09:27:46 GMT

The LX2080 automotive-grade chip fails to start at a low temperature of -35°C, with no serial port output and inability to enter Hard-code mode. Measurements indicate that the power supply, clock, and reset signals are all normal. What could be the possible reason?#LX2080CA72232B

Re: LX2080

June_Lu — Wed, 10 Sep 2025 05:26:28 GMT

Please check the signals of the LX2160A Reference Manual, page 138, 4.9.6 Power-On Reset Sequence Timing.

And then check the signals status per the stage of 4.9.5 Power-On Reset Sequence Detailed Description to check which stage is wrong.

Thanks

Re: LX2080

YY2410 — Wed, 10 Sep 2025 08:50:35 GMT

Power-up sequence is fine, signals status is not convenient for measurement; and there is one more question,Refer to the attached picture,I am using an automotive-grade chip. Do I need to configure anything in the hardware or software?

Re: LX2080

June_Lu — Thu, 11 Sep 2025 07:43:12 GMT

How do you identify the Power-up sequence is fine?

If you could boot in the room temperature, you don't configure anything.

You could input your question in Chinese.