MCU cannot access PT2000 through SP

[GWIDA]

I am using MC33PT2000 to build a 24V fuel injector drive, but I am now facing difficulties and can't take the first step.

My MCU cannot communicate with PT2000 through SPI, that is, after sending the command, ID_ Check didn't respond. DATASHEET didn't have any details about SPI handshake. Please help me. thank you!

[TomasVaverka]

Hi Wei,

Please take a close look at the datasheet, both SPI write and read accesses are described in detail in chapter 8.2.

You can find useful information also in the attached PT2000SWUG.

Best regards,

Tomas

[GWIDA]

Hello, it is found that the VCC2P5 output is abnormal, the internal LDO is not working properly, the peripheral configuration is designed according to DATASHEET, and the VCC5 is also normal 5V, how can I solve it?

[wuliang]

确认下各供电电压是否异常，电压处于欠压也会发生各种问题。