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  • Two Aptina MT9V113 0.3 Megapixel VGA Cameras
  • 240MB(+16MB probably reserved for wear leveling purposes (e.g. replacing bad blocks)) eMMC NAND - Samsung KMAPF0000M-S998 MoviNAND
  • 16MB RAM - NEC uPD 46128512AF1 DDR SRAM or a Fujitsu 128-Mbit FCRAM 82DBS08164D-70L (datasheet: http://edevice.fujitsu.com/fj/DATASHEET/e-ds/e511454.pdf mirror:Media:E511454.pdf
  • (2) 256 x 192 3.25 Inch Displays, one of which has a resistive touch screen
  • Backwards compatible with Nintendo DS games, but not GBA games due to the lack of a gameboy cartridge port.
  • Integrated ARM946E-S core clocked at 133 MHz in real mode and downclocked to 66 MHz for compatibility mode. ARM7TDMI at 33 MHz. Additional CEVA XpertTeak DSP core, also running at 133 MHz
  • PAIC3000D Touchscreen and sound controller - possibly a TI codec: TSC2117
  • Mitsumi (MM3317A) or TI 72071B0 or NEC UPD68878Y04 - Power management controller. (The charger circuit itself is fully analog, and closer to the charging port.)
  • SD/SDHC Card slot
  • WiFi_Module with integrated 128KB SPI Flash for NVRAM, WiFi settings
  • BPTWL - Microcontroller based on a NEC uPD78F0500 used as "Super I/O"/"Embedded controller", used for battery charge level monitoring, volume settings, power-on sequencing of various modules (SoC, Wifi, ...), basic troubleshooting of the power supplies. Controls the status LEDs in the hinge, and the camera LED (near the outer camera).

Hardware Revisions


  • board C/TWL-CPU-01 (Original rev, all pictures below)
  • CPU: TWL. The latest date code picture I could find online was "0836 1m" as shown below, however other pictures with CPU covered show the NAND codes as late as 916, so...
  • Suspect this is the only board where WiFi chip is available in Hybrid games like CookingCoach
  • Wireless card DWM-W015

DSi RevA

  • board C/TWL-CPU-10 (Newer model, can someone provide a date or serial # range?)
  • CPU: TWL A. Mine is "0937 1k". My US Serial # is ~ TW43550???[8]. It was obtained around the holiday season of 2009. If yours is earlier, please update this.


  • board C/UTL-CPU-01
  • CPU is TWL A
  • Wireless card DWM-W024


DSi Front

Twl front.jpg Twl front traces.jpg TWL-CPU-10.png

The socket to the left of the ARM processor is the wifi chip socket.

TWL CPU pinout map: File:Twl cpu pinout.pdf (WIP)

DSi Back

Twl back.jpg

CPU with New RAM


DSi XL Front


DSi XL Back


Testpoint list here

NAND Pinout

Dsi nand.jpg Dsi nanddat.png


NAND Compressed.jpg


Side B Marked Compressed.png

PCB Overlay


Nintendo DSi PCB Layered.jpg



Glamor Shot