You need a C compiler or assembler for the CY7C68013A.
The timing will be different that a 8051. I did not read all 71 pages of data. Most new 8051(s) are MUCH faster. Some of the instruction much faster.
It is like getting a new car and by mistake they give you a rice car. It will get you to work just fine.
I would not play with the USB functions for now.
I think the schematic look like this
Many people bought CY7C68013A at ebay or aliexpress, because it's logic analyzer clone of a product. Some people use it with Signok. I think it's same like EZ-USB or USB-FX2 interface.
But I want use it for fun experiment with fast usb support, and if in the future I want to move to other microprocessor or FPGA, I might use it as USB to parallel. Just an idea for cheap solution
I haven't bought it. Want to know first if it possible for learn 8051.