L9663 Configuration

[mochensama]

我的 L9663 SPI 无法正常工作，我想通过寄存器读取L9663的设备ID，但接收回来都是0XFFFF。我现在使用的MCU是STM32F103C8T6,以下是我的计划，希望大佬们帮我看一下有没有问题。

[mƎALLEm]

Translation:

My L9663 SPI is not working properly. I want to read the device ID of L9663 through the register, but the received data is 0XFFFF. The MCU I am using now is STM32F103C8T6. The following is my plan. I hope you can help me check if there is any problem.

[lowPassFilter]

@mochensama , Hi, have you solved your problem? I designed the circuit with reference to spec, if you use PSI5-P mode, you shouldn't pull up BH1 of pin8, right? Also are you using 5V for VASSUP? I feel like it's usually with a higher voltage, right?

 

This post has been translated from Chinese to comply with the ST Community guidelines.

[DWA_46810]

Hello, have you solved the problem?

I am a first-year graduate student. I am also encountering this problem now.

*This post has been translated from Chinese to comply with the ST Community guidelines.

 

 

[Phoenix666]

可能是VDD电压不对，芯片手册提到spi电压由VDD决定，通常STM32F103的spi电压为3.3V，l9663在VDD供电为5V 的情况下，SPI电平为5V，可能会导致此问题。在第六章的Table 23. Digital I/O的Vout_High可以看的明确证据