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AN80248 - PSoC® 3, PSoC 5LP Improving the Accuracy of Internal Oscillators | Cypress Semiconductor

AN80248 - PSoC® 3, PSoC 5LP Improving the Accuracy of Internal Oscillators

Last Updated: 
Jun 26, 2017
Version: 
*G
This is an Obsolete Application Note
The document AN80248 - PSoC® 3, PSoC 5LP Improving the Accuracy of Internal Oscillators has been marked as obsolete. The obsolete version of this application note is still available with the below description but may not be complete or valid any longer. If you have any questions or require support in regards to the below application note content, please click here and create a technical support case.

If you’re interested in ILO trim, go to the ILO Trim Component datasheet page.

If you’re interested in IMO trim, go to the CE219322 page.

Two components developed for this purpose greatly simplify the process of calibrating the ILO and IMO with respect to a reference time base.

Introduction

PSoC® 3 and PSoC 5LP (hereafter referred to as PSoC) have a very powerful clocking system. This system offers the flexibility and performance to suit the needs of most embedded applications. It is comprised of clock sources and a clock distribution network. The clock sources available to you are: the internal main oscillator (IMO), external crystal oscillators (ECO) and internal low-speed oscillator (ILO). This application note describes the IMO and ILO as well a method to improve their accuracy through run-time calibration.

The following table indicates the PSoC devices, PSoC Creator versions, compilers, and development kits that will work with this application note project:

Project
Device
PSoC Creator
Version
Development Kit
CY8CKIT-xxx
Compiler
Architecture
Silicon
Revision
V2.2
or higher
V2.1
001
DVK
030/050
DVK
003/014
FTK
Keil
GCC
RVDS
MDK

AN80248.zip

Prod
YES
NO
YES
YES
NO
YES
N/A
N/A
N/A
Prod
YES
NO
YES
YES
NO
N/A
YES
YES
YES
Prod
YES
NO
YES
YES
NO
N/A
YES
YES
YES

Notes:

  1. Click on AN77835 - PSoC® 3 to PSoC 5LP Migration Guide to learn differences between PSoC 3 and PSoC 5LP.
  2. For PSoC 5 project and related document, please download file AN80248_Archive.zip.

Projects associated with this application note can be downloaded from the 'Related Files' section below. For your convenience, we have provided projects that are compatible with the two most recent versions of PSoC Creator:

  • AN80248.zip is used with PSoC Creator 2.2
  • AN80248_Archive.zip is used with PSoC Creator 2.1/2.0

The project’s default settings may not be compatible with your device or kit, and you may need to change your project settings. For more information, see: