AN2249 - PSoC® 1 Psuedo-Random Sequence Generator User Module as a One-Shot Pulse Width Discriminator and Debouncer
Last Updated: 12/11/2012
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Version: *B
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| AN2249 describes how to use a Pseudo-random sequence generator (PRS) user module to debounce noisy comparator output signals. |
Real world signals often cross comparator trip points multiple times as they transition. Most often, these multiple transitions are unwanted. A PRS user module may be configured as a one-shot and used to debounce these signals. An example with multiple implementations is demonstrated.
Example Project |
Supported H/W and S/W |
Supported PSoC1 Devices |
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PSoC Designer Version |
H/W Kit |
CY8C20xxx |
CY8C21xxx |
CY8C22xxx |
CY8C23xxx |
CY8C24xxx |
CY8C27xxx |
CY8C28xxx |
CY8C29xxx |
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Yes |
5.1 |
CY3210-PSoCEVAL1 |
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x23, x34, x45 |
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x23A, x94 |
x43 |
x |
x66 |
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Related Documentation |
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| User Module Datasheets |
Last Updated |
| User Module Datasheet: 8-Bit Pseudo Random Sequence Generator Datasheet PRS8 V 3.4 (CY8C29/27/24/22/21xxx, CY8C23x33, CY8CTST110, CY8CTMG110, CY8CTST120, CY8CTMG120, CY8CTMA120, CY8C21x45, CY8C22x45, CY8CTMA140, CY8CTMA30xx, CY8C28x45, CY8CPLC20, CY8C28x43, CY8C28x52) |
08/02/2012 |
| User Module Datasheet: 24-Bit Pseudo Random Sequence Generator Datasheet PRS24 V 3.4 (CY8C29/27/24/22/21xxx, CY8C23x33, CY8CTST110, CY8CTMG110, CY8CTST120, CY8CTMG120, CY8CTMA120, CY8C21x45, CY8C22x45, CY8CTMA140, CY8CTMA30xx, CY8C28x45, CY8CPLC20, CY8C28x43, CY8C28x52) |
08/02/2012 |
| User Module Datasheet: 16-Bit Pseudo Random Sequence Generator Datasheet PRS16 V 3.4 (CY8C29/27/24/22/21xxx, CY8C23x33, CY8CTST110, CY8CTMG110, CY8CTST120, CY8CTMG120, CY8CTMA120, CY8CTMA140, CY8C21x45, CY8C22x45, CY8CTMA30xx, CY8C28x45, CY8CPLC20, CY8C28x43, CY8C28x52) |
08/02/2012 |
| User Module Datasheet: 32-Bit Pseudo Random Sequence Generator Datasheet PRS32 V 3.4 (CY8C29/27/24/22/21xxx, CY8C23x33, CY8CTST110, CY8CTMG110, CY8CTST120, CY8CTMG120, CY8CTMA120, CY8C21x45, CY8C22x45, CY8CTMA140, CY8CTMA30xx, CY8C28x45, CY8CPLC20, CY8C28x43, CY8C28x52) |
08/02/2012 |
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Related Application Notes:
Domain Tags: PRS, Pins / Ports
Related Knowledge Base: Digital, PSoC Designer
Spec No: 001-31343;
Sunset Owner: MSUR;
Secondary Owner: GULA;
Sunset Date: 09/17/11
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