Kinetis Software Development KitのトピックRe: Fs6503 and FS0B

Fs6503 and FS0B

347996379 — Wed, 03 Jun 2020 10:31:24 GMT

Hi,Sun

Now, my Fs6503 feed the dog has been normal, I use in my schematic FS0B this pin to control my contactor, at first I didn't notice this place, this pin as long as electricity output low level, whether in the debug mode or normal mode, so that I contact directly is locked, can you help me points for this reason?I have checked the reasons why FS0B may be pulled down in the manual, as shown in the following pictures. I have confirmed that there are no problems with the first three, and the remaining ones are all in a vague state. Please analyze the reasons in combination with my schematic diagram.

Maybe I should ask you how I can pull the FS0B pin higher after the initialization of the fs6503 is complete.

Re: Fs6503 and FS0B

guoweisun — Thu, 04 Jun 2020 03:33:17 GMT

HI！

FS0B的电路看不清楚，能发清楚的图片吗关于FS0B的电路！

Re: Fs6503 and FS0B

347996379 — Fri, 05 Jun 2020 06:22:16 GMT

麻烦帮我看看问题出现在哪里，结合上面的问题

Re: Fs6503 and FS0B

guoweisun — Wed, 02 Aug 2023 22:44:19 GMT

1:No more issue with your schematic.

2: For the release FSXB please read detail information procedure in page57 attached.

Re: Fs6503 and FS0B

347996379 — Tue, 09 Jun 2020 08:09:07 GMT

Hi,sun

I would like to know whether the PIN of FS0B remains low after power on or reset.The software package you provided only has the function of releasing FS0B, but does not have the function of raising it.In addition, in debug mode, the output of FS0B is low or high.

Re: Fs6503 and FS0B

guoweisun — Tue, 09 Jun 2020 11:39:28 GMT

对的，每次power on reset FS0B都是默认low的无论再哪个模式下面，所以我才给您release的方法。

Re: Fs6503 and FS0B

347996379 — Wed, 10 Jun 2020 07:04:02 GMT

非常感谢！现在我已经能够释放FS0B这个管脚了，由于这个管脚我是用来做功能安全的，当CPU不能运行的时候，并停止了喂狗，在fs6503内部fs0b这个管脚有没有主动拉低的机制

Re: Fs6503 and FS0B

guoweisun — Thu, 11 Jun 2020 02:26:51 GMT

这个SF_OUTPUT_REQUEST register寄存器的FS0B_REQbit 设置成1就是asserted low.

Re: Fs6503 and FS0B

347996379 — Thu, 11 Jun 2020 07:18:55 GMT

可能你没明白我的意思，上面我说到CPU在完全死掉的情况下，主cpu还怎么能去读写sbc的寄存器？在这个时候sbc有没有主动释放fs0b的机制

Re: Fs6503 and FS0B

guoweisun — Thu, 11 Jun 2020 07:22:05 GMT

CPU都死掉了怎么可能去releaseFS0B!

Re: Fs6503 and FS0B

347996379 — Thu, 11 Jun 2020 08:30:52 GMT

意思是这个管脚不能当做安全功能管脚用了？CPU非正常情况下，fs0b管脚不能锁住控制开关

Re: Fs6503 and FS0B

guoweisun — Thu, 11 Jun 2020 11:03:38 GMT

如果你不去喂狗，就会产生错误FS0B，这个时候FS0B就会被asserted.你说的锁住控制是怎么理解？

Re: Fs6503 and FS0B

347996379 — Thu, 11 Jun 2020 11:27:52 GMT

发送错误的时候，FS0B的电平被翻转

Re: Fs6503 and FS0B

guoweisun — Thu, 11 Jun 2020 11:39:36 GMT

有错误是会翻转啊，前提是release了FS0B,这不就是安全功能吗？

Re: Fs6503 and FS0B

347996379 — Thu, 11 Jun 2020 23:57:06 GMT

明白了，谢谢

Re: Fs6503 and FS0B

witness — Thu, 06 Mar 2025 02:53:26 GMT

您好，我现在也遇到了和你之前一样的问题，FS0B一直拉低，请问你是怎么拉高的呢？实现方法可以告知一下吗？非常感谢！

Re: Fs6503 and FS0B

guoweisun — Thu, 06 Mar 2025 02:57:48 GMT

您用公司的邮箱提 ticket过来，用个人邮箱不能提交case只能再community上提问

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Re: Fs6503 and FS0B

witness — Thu, 06 Mar 2025 03:33:40 GMT

你好，孙工

你这边能帮忙先告知下release FS0B方法吗？

Re: Fs6503 and FS0B

guoweisun — Thu, 06 Mar 2025 04:47:03 GMT

不同的情况下有不同的处理方法，您先提交ticket吧假如是163的邮箱是不能提交ticket的，您要用公司的邮箱

Re: Fs6503 and FS0B

witness248 — Thu, 06 Mar 2025 05:34:26 GMT

I have created ticket as below

Home\ Product Forums \Other NXP Products\ FS6513 FS0B can not be release