Controller Compatibility

[tylerm_4927936]

Hello,

We are currently using a Cypress CY8C3666LTI-203 controller in one of our products. These parts have been very hard to find recently, and we don’t have easy access to the source code for the firmware. I would like to use the CY8C3666LTI-027 part in it’s place. It looks to me like the only difference is the USB port on the 027 Part.

What is the probability that the firmware loaded on the old part will work unmodified on the new part?

Thanks,

-T

Tyler Maggert

Mechanical Engineer

[Rakshith · Accepted solution]

Hi @tylerm_4927936, 

There are some significant differences between the two devices - 

CY8C3666LTI-027 is the higher-end device and as the JTAG IDs are different you cannot program the hexfile of CY8C3666LTI-203 into CY8C3666LTI-027.

We recommend you to change the device in the PSoC Creator project.