查询STM8S微控制器中Vcap的值

我认为ST微电子的专家对发布与其产品相关的查询的回复不感兴趣。
 
 
 我想我没有问过一个简单而无需回复的问题。
 
 因为这个论坛的点击列表讲述了htis论坛中正在进行多少活动的故事。
 
 
 没有印象需要改进。

亲爱的先生，
 
 
 1 uF电容似乎在所需范围内。但是，您需要在数据表中检查制造变化是什么（例如+ -10％，有时+ -20％）以及在给定温度范围内容量变化的范围 - 与标称容量的差异可能在几十个百分点的范围内，取决于电容器材料等
 要检查的最后一点是具有直流偏置的变化 - 在0402这样的小型情况下，主要对于电容器很重要，当连接1.8V时，容量损失可能高达标称值的50％。在您的应用的整个温度范围内，必须至少遵守470nF的电容。
 您可以从电容器供应商/供应商处的数据表中找到这些数据。
 
 您也会在那里找到ESL和ESR，但是，通常的陶瓷电容器对这些参数没有任何问题。



以下为原文




Dear sir,


1 uF capacitor seems to be in the required range. However, you need to check in the datasheet what is the manufacturing variation (e.g. +-10%, sometimes +-20%) and what will be capacity variation within given temperature range - difference from nominal capacity could be in the range of tens percent, depending on the capacitor materials etc.
Last point to be checked is variation with a DC bias - it is important mainly for capacitor in small cases like 0402, where loss of capacity could be up to 50% against the nominal, when 1.8V is connected. A minimum of 470nF capacitance has to be respected over the whole temperature range of your application.
You will find those data in the datasheet from your vendor/supplier of capacitor.

You will find there as well ESL and ESR, however, usual ceramic capacitors has no issue with those parameters.