Cypress Perform

Home > Documentation > Application Notes
AN60220 - PSoC® 3 / PSoC 5LP Multiplexed Comparator

Last Updated: 12/06/2012
Version: *D
AN60220 describes how to multiplex the comparator for use with more than one input signal.

PSoC 3 and PSoC 5LP series of devices has 2 or 4 comparators. If the number of input signals that needs to be monitored is more than the available number of comparators, then one of the solutions is to multiplex the comparator. The other available options are to use OPAMPs and SIOs as comparators. SIO comparator details can be obtained from AN60580. In AN60220, as an example 4 channel multiplexing is implemented using configurable Digital and analog hardware, consuming 0% CPU bandwidth in multiplexing. It also explains ways to scale the design to different number of channels and scanning rate.

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
  V2.1 SP1
V2.1/2.0
001
DVK
030/050
DVK
003/014
FTK
Keil
GCC
RVDS
MDK

AN60220.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
AN60220_Archive.zip
ES2, ES3, Prod
NO
YES
YES
YES*
NO
YES
N/A
N/A
N/A
ES1, Prod
NO
YES
YES
YES*
NO
N/A
YES
YES
YES

*Refer to Migrating CY8CKIT-001 DVK project to CY8CKIT 030/ 050. 

Notes:
  1. Click on AN84741 - PSoC® 5 to PSoC 5LP Migration Guide to learn differences between PSoC 5 and PSoC 5LP.
  2. Click on AN77835 - PSoC® 3 to PSoC 5LP Migration Guide to learn differences between PSoC 3 and PSoC 5LP.
  3. For PSoC 5 project and related document, please download file AN60220_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:

  • AN60220.zip is used with PSoC Creator 2.1 SP1
  • AN60220_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:

这些文档仅供参考。赛普拉斯、赛普拉斯管理层、雇员及分销商对翻译错误不承担任何责任。当您在设计开发过程中使用这些文档时，我们强烈建议您参照英文版本。

これらの文献はあくまでもご参考のためのみに日本語翻訳されています。誤訳によるトラブルが発生した場合、Cypress Semiconductor Corp. 全ての子会社、関連会社、役員、従業員、販売代理店は一切の責任を負いかねます。 最新の英語版オリジナル文献を必ずご参照いただくことをお勧め致します。




Related Files


Related Resources

Related Application Notes:
Domain Tags: Analog, Comparators

Related Knowledge Base: Analog, Comparator
Spec No: 001-60220; Sunset Owner: NIDH; Secondary Owner: XKJ; Sunset Date: 06/14/11
Rate Application ..

Related Resources

Related Pages