PSoC 4 CSD self-test capabilities

Tip / Sign in to post questions, reply, level up, and achieve exciting badges. Know more

cross mob
GrCa_1363456
Level 6
Level 6
50 likes received Beta tester First comment on KBA

Is there an updated version of an Application Note from 2007, AN17582, "Failure Mode and Effect Analysis (FMEA) Implementation for CSD" ? AN17582 was written for PSoC 1 as it lists PSoC Designer version 4.4.

Cypress now offers Built-In-Self-Test (BIST) in the CapSense Component. Is this BIST an implementation of the recommendations in AN17582?

Any updated or additional recommendations to self-test Capacitive capabilities on PSoC 4 that might identify keys not functioning in field applications would be appreciated.

Reference: Capsense Component datasheet @ https://www.cypress.com/documentation/component-datasheets/psoc-4-capacitive-sensing-capsense-csd

Greg

0 Likes
1 Solution
Hari
Moderator
Moderator
Moderator
750 replies posted 500 replies posted 250 solutions authored

Hi GrCa_1363456

Yes. BIST is an implementation of these concepts. With the latest component, CapSense V7.0, there are several test that are available such as

-checking RAM structure integrity,

-RAM widget integrity,

-checking sensor short to ground, VDD and other sensors,

-parasitic capacitance of sensors and shield,

-VDDA measurements

-External capacitors measurements.

All these tests can be performed by running the CapSense_RunSelfTest API. Please note that the ​"Enable self-test library" option must be enabled for these APIs to be active.

You can refer the latest component datasheet for more information.

Link: https://www.cypress.com/documentation/component-datasheets/psoc-4-capacitive-sensing-capsense


Best regards

Hari

View solution in original post

1 Reply
Hari
Moderator
Moderator
Moderator
750 replies posted 500 replies posted 250 solutions authored

Hi GrCa_1363456

Yes. BIST is an implementation of these concepts. With the latest component, CapSense V7.0, there are several test that are available such as

-checking RAM structure integrity,

-RAM widget integrity,

-checking sensor short to ground, VDD and other sensors,

-parasitic capacitance of sensors and shield,

-VDDA measurements

-External capacitors measurements.

All these tests can be performed by running the CapSense_RunSelfTest API. Please note that the ​"Enable self-test library" option must be enabled for these APIs to be active.

You can refer the latest component datasheet for more information.

Link: https://www.cypress.com/documentation/component-datasheets/psoc-4-capacitive-sensing-capsense


Best regards

Hari