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FAQ:关于芯片烧录电压的问题? #92

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KKyer opened this issue Jul 21, 2022 · 0 comments
Open

FAQ:关于芯片烧录电压的问题? #92

KKyer opened this issue Jul 21, 2022 · 0 comments

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@KKyer
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KKyer commented Jul 21, 2022

一、简介

AD14N / AD15N / AC104N 系列芯片在使用强制烧写工具、一拖八烧写器烧录时,需要注意所选的芯片封装,或样机电路里,VDDIO与VBAT是否有短接!

  • 若短接了,根据规格书对于VDDIO的要求,烧写时的电压不能超过3.6V;
  • 若没有短接,根据规格书对于VDDIO的要求,烧写时的电压可支持5.5V

否则,对于 VDDIO与VBAT短接 的情况,使用了超过 3.6V耐压值 的电压烧写可能会 烧坏芯片

二、建议

  • 样机芯片按VBAT和VDDIO引脚短接设计会出现以下报错(vddio 错误),请注意烧写时USB端电压需转换!!!
    图片

  • 使用一拖八烧写器烧写芯片VBAT和VDDIO引脚短接样机,一拖八烧写器USB端电源电压需要转换为3.3V才能进行烧写(V2.0以上版本一拖八烧写器USB端电压PC部署工具3V~6V可设,不需要转换),否则可能出现烧录异常或者损坏芯片。USB端电压转换及接法如下:
    图片
    图片

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