How does circuit design to isolate I2C and programming pin to other chip I/O pin

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ToTa_1077931
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Distributor - Zenitron(GC)
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Dear Cypress:

I want to design a circuit to isolate gpio pin between IC pins(include programming pin) and other chip I/O pins to avoid  power insert IC via GPIO

Do you have idea for the design?I tried to use CY3295-isolation dongle,it is okay for I2C function,but programming function doesn't work.

BR,

Zenitron FAE Tommy

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1 Solution

Hi ToTa_1077931​,

Can you please provide the details of your application?

If it is an automotive application, please create a MyCase for this issue.

Thanks and Regards,

Rakshith M B

Thanks and Regards,
Rakshith M B

View solution in original post

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Rakshith
Moderator
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Moderator
250 likes received 1000 replies posted 750 replies posted

Hi ToTa_1077931​,

Can you please provide more details regarding your request and the application that you are developing?

I want to design a circuit to isolate gpio pin between IC pins

Can you please let me know which IC you are referring to?

Please share the schematic and layout of your hardware design? Also, how are you programming the device?

Thanks and Regards,

Rakshith M B

Thanks and Regards,
Rakshith M B
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ToTa_1077931
Level 1
Level 1
Distributor - Zenitron(GC)
5 sign-ins First question asked First reply posted

Dear Rakshith:

Thanks for your support;

I want to isolate signals of  I2C ,reset, INT and programming between CY3295-MKT(PSOC 3 CY8C3866) and auto touch IC.

Actually,I isolated signal of I2C,reset and INT and worked.But programming didn't.

Following schematic is the method of connection that I tried to test program IC.

Do you have any idea for this?

CY3295-isolation board.jpg

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Hi ToTa_1077931​,

Can you please provide the details of your application?

If it is an automotive application, please create a MyCase for this issue.

Thanks and Regards,

Rakshith M B

Thanks and Regards,
Rakshith M B
0 Likes