In a blog post released earlier today, Sony revealed that it would be using the PAL version of nine titles on the PlayStation Classic. The PAL versions will be included in the North American PlayStation Classic as well. Considering that North America televisions operate on the NTSC standard, the format difference could cause these games playing at different speeds or glitch out, rendering them unplayable.
https://www.notebookcheck.net/The-North-American-PlayStation-Classic-will-use-PAL-version-of-some-titles.369361.0.html
The PAL standard used in Brazil was the "PAL-N", witch operated at 60Hz.
Sorry, it was the "PAL-M" standard. After more than a decade using such things make you forget the details.