Product replacement

[dapl_4647236]

We have a product using CY15B104QN-50LPXI. For lack of availability we are planning to use the part CY15B104QSN-108LPXI. Is this part a drop-in replacement? Should we make some preliminary test?

[PradiptaB_11 · Accepted solution]

Hi,

The part CY15B104QSN-108LPXI is not a drop in replacement for the CY15B104QN-50LPXI. The both have different pin out as pin 7 is DNU in the latter while it is RESET/IO3 pin in the former. Also the CY15B104QSN-108LPXI supports QSPI and upto 108 MHz SPI while the other part does not support QSPI and speed grade is 40 MHz. Also the current consumption will be slightly more in the QSN part. 

If the above factors will minimally affect your application then you may switch to the other part, but it is not a drop in replacement to answer the question.

Thanks,

Pradipta.