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Question on 4.7uF ceramic capacitor

AA4
Associate II

Post edited by ST moderator: title and post edited to translate the content.

我在stm32F412RGT6的数据手册的6.1.6部分看到关于滤波电容的描述,2. The 4.7 µF ceramic capacitor must be connected to one of the VDD pin.从图中来看是以144PIN的芯片为例,但我使用的是64PIN的封装,是否也需要在其中一个VDD引脚放置4.7uf的电容,如果需要,是单独放置一个4.7uf还是与一个0.1uf并联放置

Translation:

"In section 6.1.6 of the STM32F412RGT6 datasheet, regarding filter capacitors, it states: "2. The 4.7 µF ceramic capacitor must be connected to one of the VDD pins." The diagram shows this for a 144-pin chip, but I'm using a 64-pin package. Do I also need to place a 4.7 µF capacitor on one of the VDD pins? If so, should I place a single 4.7 µF capacitor or connect it in parallel with a 0.1 µF capacitor?"

10 REPLIES 10

That's n x 100nF where n the number of VDD pins.

1 x 4.7uF means one 4.7uF.

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