AX5202P pinout

AX5202P is the part number of an MMC3 clone found in bootleg games. There are reports that some lots of AX5202P contain a large number of factory seconds with the IRQ not working.

    
              ,---V---.
      [n] M2->|01   40|- +5V
[w] WRAM /CE<-|02   39|- ???
  [s] CPU D7->|03   38|->PRG /CE [r]
  [s] CPU A0->|04   37|->PRG A17 [r]
  [s] CPU D6->|05   36|<-CPU A13 [n]
  [s] CPU D0->|06   35|->PRG A18 [r]
  [s] CPU D5->|07   34|->PRG A14 [r]
  [s] CPU D1->|08   33|->PRG A16 [r]
  [s] CPU D4->|09   32|<-CPU A14 [n]
  [s] CPU D2->|10   31|->PRG A13 [r]
  [s] CPU D3->|11   30|->PRG A15 [r]
[w] WRAM +CE<-|12   29|<-CPU R/W [n]
[w] WRAM /WE<-|13   28|<-/PRGSEL [n]
 [r] CHR A11<-|14   27|->/IRQ [n]
 [r] CHR A16<-|15   26|->CHR A17 [r]
 [r] CHR A10<-|16   25|->CHR A15 [r]
 [n] PPU A12->|17   24|->VRAM A10 [n]
 [n] PPU A11->|18   23|->CHR A12 [r]
 [n] PPU A10->|19   22|->CHR A14 [r]
         GND -|20   21|->CHR A13 [r]
              `-------'

Key:

[r]

To PRG ROM or CHR ROM/RAM

[n]

To NES Control Deck

[s]

Shared

[w]

To WRAM

See also

• MMC3 pinout
• 88 pinout

References

• AX5202P MMC3 clone pinout?