PSoC4000 Cmod

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Regan_Yan
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Seems the Cmod pin in PSoC4000 series could be assigned to every pin of this chip. Actually, the datasheet recomemnd P0.4 as the Cmod dedicated pin.

How to understand this different point between PSoC Creator4.2 and datasheet.

Capture.PNG

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Vison_Zhang
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First comment on KBA 750 replies posted 250 sign-ins

使用专门的 CMOD 引脚有两个优势,一个是不占用 analog routing资源中的 AMUX 路由,二是 CSD IP 到 CMOD PAD 走的内部路径和阻抗都最优化。在任何触摸设计中,优先选择专用 CMOD Pin 来驱动 CMOD 电容。

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NoriTan
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Please refer an application note AN85951 - PSoC® 4 and PSoC® 6 MCU CapSense® Design Guide

There is a recommended pin list for the CMOD pin.

GS004751.png

It says other pins can be used for CMOD from PSoC Creator 3.3 SP2 but the recommended pin is still P0[4].

Regards,

Noriaki

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Vison_Zhang
Moderator
Moderator
Moderator
First comment on KBA 750 replies posted 250 sign-ins

使用专门的 CMOD 引脚有两个优势,一个是不占用 analog routing资源中的 AMUX 路由,二是 CSD IP 到 CMOD PAD 走的内部路径和阻抗都最优化。在任何触摸设计中,优先选择专用 CMOD Pin 来驱动 CMOD 电容。

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