S32K3 witch UTEST address can customer use？

[zhengjianfei1]

我们发现S32K3  S32K3xx_DCF_clients.xlsx文件里描述的“Reserved for customer/application usage”的区域是有问题的。我们测试的时候，写入数据到0x1B000050~0X1B000058，程序可正常运行。然而，我们测试将同样的数据写入到0x1B000048~0x1B00004F，程序工作异常，出现周期复位情况，经过测试，需要在时钟初始化前增加几十毫秒的延时才能正常运行。对此，我们认为，0x1B000048~0x1B00004F写入数据会对S32K3的运行有未知的影响。那么UTEST区域有哪些地址是我们用户可以随意使用的呢？您能给一些建议吗？谢谢！

[Robin_Shen]

Hi

Table 135. UTEST Device configuration of RM758223-HSE-B Firmware Reference Manual - V2.3(2.3).pdf mentions: 0x1B000048 8 bytes Used by HSE. Must not be programmed by application.
Sorry, the information in S32K3xx_DCF_clients.xlsx conflicts with RM758223-HSE-B Firmware Reference Manual - V2.3(2.3).pdf. I need to consult it with our AE team and will update as soon as I have their feedback. 

Best Regards,
Robin

[zhengjianfei1]

谢谢您Robin，另外能否也帮忙问问AE Team写入0X1B000048~1B00004F后，会有什么影响或风险吗？目前已经有多个产品已经写入了这个地址了。