What size is the U1 Program size device E.G. 27C64? Same for U2 Character Prom.
For commercial NES games:
PRG can be anywhere from 16 KBytes to 512 KBytes depending on the title. CHR can be anywhere from 8 KBytes to 256 KBytes depending on the title, or it can be an 8 KB or (rarely) 16 KB RAM.
EDIT: There are a few Famicom (not NES) games that use 1 MByte PRG ROM + 8 KB CHR RAM, and there are possibly a couple Famicom games (probably all MMC5) that use PRG ROM + 512 KByte CHR ROM.
Some games such as Metal Slader Glory also have 512kb ChrRom.