Understanding Cap Bank in LPC55(S)xx

PublishTime：2021-08-12

●All LPC55(S)xx products have two crystal oscillators: A 16 MHz crystal oscillator and a 32 KHz crystal oscillator.
●Each crystal oscillator has one embedded capacitor bank, which is always enabled and its capacitance can be adjusted in certain range (IEC equivalent capacitive load: 6 - 10 pF). The capacitor bank can be used as integrated load capacitors for the crystal oscillators, which helps save external load capacitors of the crystal and hence the system BOM cost.
●This application note provides a short introduction to this capacitor bank or Bank, and describes how to apply this function to the actual design.

Brand of Product：	NXP
Part#：	LPC55xx 、 LPC55Sxx More Part#
Product Category：	16 MHz crystal oscillator 、 32 KHz crystal oscillator More
Application：	More
Data Type：	Application note & Design Guide More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	16 November 2020
Version Number：	Rev. 0
Data Encoding：	AN13057
Data Size：	1.7 MB

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