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AN60220 - PSoC® 3 / PSoC 5LP Multiplexed Comparator | Cypress Semiconductor

AN60220 - PSoC® 3 / PSoC 5LP Multiplexed Comparator

Last Updated: 
Aug 01, 2016
Version: 
*D
This is an Obsolete Application Note
The document AN60220 - PSoC® 3 / PSoC 5LP Multiplexed Comparator 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.

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
or higher
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 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 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: