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DS Cartridge replacement save chip IDs/pinouts
I've seen a good number of people ask what replacement saves are needed for their games. Here ya go.
You can buy these from whatever site you want. I like using Mouser and DigiKey, but some chips may be out of production and you'll need to find another source.
NOTE: When finding a replacement save chip...
- You can use a larger chip
- You can not use a smaller chip
NOTE: Pokemon games will use the 4mbit/512kb chips
SO8 150 mil width (256kb - 512kb)
2mbit (256kb): LE25FW203A, LE25FW203T, M45PE20*, M35PE20**
4mbit (512kb): LE25FW403A, M45PE40
*M45PE20: I've had some issues finding this chip in the correct package, and when installed it doesn't want to work for long. Might be because I got it from unofficial distributors, but be careful and try to avoid it just in case.
**M35PE20: I've had trouble detecting this chip on 3DS. I made a WiFi board flasher that hooks up firmware (save) chips through the SPI bus. Every M35PE20 chip does not show up, though it's fine on DS/DSi. I am pretty sure the issue isn't a result of my adapter. I will test M35PE20s on normal cartridges and let you know.
PINOUT (same for all):
TSSOP8 169 mil width (512bytes - 64kb)
4kbit (512bytes): M95040
64kbit (8kb): M95640
512kbit (64kb): M95512
PINOUT (same for all):
Friendly reminder when installing a new chip:
Make sure the chip is lined up correctly with the cartridge! You're good as long as the dot on the chip and arrow on the PCB (circled below) are in the same position. These denote pin #1.
I've seen a good number of people ask what replacement saves are needed for their games. Here ya go.
You can buy these from whatever site you want. I like using Mouser and DigiKey, but some chips may be out of production and you'll need to find another source.
NOTE: When finding a replacement save chip...
- You can use a larger chip
- You can not use a smaller chip
NOTE: Pokemon games will use the 4mbit/512kb chips
SO8 150 mil width (256kb - 512kb)
2mbit (256kb): LE25FW203A, LE25FW203T, M45PE20*, M35PE20**
4mbit (512kb): LE25FW403A, M45PE40
*M45PE20: I've had some issues finding this chip in the correct package, and when installed it doesn't want to work for long. Might be because I got it from unofficial distributors, but be careful and try to avoid it just in case.
**M35PE20: I've had trouble detecting this chip on 3DS. I made a WiFi board flasher that hooks up firmware (save) chips through the SPI bus. Every M35PE20 chip does not show up, though it's fine on DS/DSi. I am pretty sure the issue isn't a result of my adapter. I will test M35PE20s on normal cartridges and let you know.
PINOUT (same for all):
TSSOP8 169 mil width (512bytes - 64kb)
4kbit (512bytes): M95040
64kbit (8kb): M95640
512kbit (64kb): M95512
PINOUT (same for all):
Friendly reminder when installing a new chip:
Make sure the chip is lined up correctly with the cartridge! You're good as long as the dot on the chip and arrow on the PCB (circled below) are in the same position. These denote pin #1.
Last edited by rvtr,
