Hardware

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This page lists and describes the hardware found inside the Nintendo 3DS. Many of these parts are custom made and are expanded upon here or in other pages.


Specifications

Type Name Datasheet Source
SoC Nintendo 1048 0H (Custom): CPU, GPU, VRAM & DSP all on one chip. N/A N/A
ARM11 Processor Core ARM11 MPCore 2x 268MHz(~268123480 Hz) & 2x VFP Co-Processor [1] [11]
ARM9 Processor Core ARM946 134MHz(~134058675 Hz) [2]
GPU DMP PICA 268MHz N/A [11]
DSP CEVA TeakLite. Based on Atmel AT75C. 134Mhz. 24ch 32728Hz sampling rates. N/A [11] [3]
VRAM 6 MB within SoC. Independent of system memory (FCRAM). N/A [11]
FCRAM 2x64MB Fujitsu MB82M8080-07L [4][5][6] [5]
Storage Toshiba THGBM2G3P1FBAI8 1GB NAND Flash N/A N/A
Power Management Texas Instruments PAIC3010B 0AA37DW N/A FCC filing
Gyroscope Invensense ITG-3270 MEMS Gyroscope [7] N/A
Accelerometer ST Micro 2048 33DH X1MAQ Accelerometer Model LIS331DH [8] N/A
Wifi 802.11b/g Atheros AR6014 [9] N/A
Infrared IC NXP infrared IC, "S750 0803 TSD031C" [12] [10]
Auxiliary Microcontroller Renesas Electronics UC CTR, custom Nintendo microcontroller N/A N/A
? "TI 93045A4 OAAH86W" N/A N/A
  • [11] Official Documentation
  • [5],[10] According to iFixit.com (source):
  • Datasheet for memory is for a chip in the same series, it has less memory than the one inside the 3DS (128mbits vs 512mbits).
  • There is a trove of data on the FCC website at [10].
  • [12] This IC is somewhat similar to this.

New_3DS Specifications

Type Description Datasheet Source
ARM11 Processor Core ARM11 MPCore 4x 268MHz(~268123480 Hz) & 4x VFP Co-Processor [11]
ARM9 Processor Core ARM946 134MHz(~134058675 Hz) [12]
FCRAM 256MB
Storage Samsung KLM4G1YEQC 4GB NAND Flash N/A N/A
VRAM 6 MB within SoC. Independent of system memory (FCRAM). N/A
4MB of additional memory inside SoC. N/A
Power Management Texas Instruments AIC3010B 39C4ETW N/A N/A
Auxiliary Microcontroller Renesas Electronics UC KTR, custom Nintendo microcontroller N/A N/A
? "TI 93045A4 38A6TYW G2" N/A
NFC
MVD Hardware video decoder(it's unknown whether this can do more than decoding).
New HID C-Stick and ZL+ZR buttons. This new HID is usable for software which uses Circle Pad Pro, see here.

Note that 4 cores is also the maximum number of cores available with ARM11-MPCore.

FCRAM

There is one FCRAM (Fast Cycle RAM) IC in the 3DS, produced by Fujitsu and branded as MB82M8080-07L. The Fujitsu MB82M8080-07L chip internally contains 2 dies, where each die is branded MB81EDS516545 and MB82DBS08645.

The MB81EDS516545 die is a CMOS Fast Cycle Random Access Memory (FCRAM) with Low Power Double Data Rate (LPDDR) SDRAM Interface containing 512MBit storage accessible in a 64-bit format. The MB81EDS516545 is suited for consumer applications requiring high data bandwidth with low power consumption.


SoC

The 3DS has much of it's internals housed in a SoC (System on Chip) just like it's predecessors. This is done to reduce build costs, cut down on power consumption, as well as make the PCB layout less complex and make the system harder to tamper with. The SoC, branded as the Nintendo 1048 0H, contains the CPU, GPU, DSP and VRAM.

According to official documents, the CPU used is a dual-core ARM11 CPU, clocked at 268MHz. One core is dedicated to system software, while the other is used for application programming, each known as the syscore and appcore, respectively.


GPU

Designed by Digital Media Professionals Inc. (DMP) and codenamed PICA 200, 268Mhz. Supports OpenGL ES 1.1.

Pica200BlockDiagram.png

Block diagram of an ULTRAY2000 based architecture PICA200

Images

Front

CTR Front.jpg

High Resolution

Back

CTR Back.jpg

High Resolution

NAND pinout

NAND dumping has been successful, but the image is encrypted.

Normal model

CTR NAND pinout.png

XL model

CTR NAND pinout XL.jpg


WiFi dongle pinout

CTR WiFiDongle pinout.png

SDIO interface is colored red:

  • CLK
  • CMD
  • D0, D1, D2, D3

This is the interface for the 'NEW' WiFi module (based on Atheros AR6002) first included in DSi.

The proprietary and by now ancient DS-mode WiFi is colored yellow, pins are unknown.

I2C eeprom is colored blue:

  • SCL
  • SDA

SPI Flash is colored purple:

  • CLK
  • CS#
  • SI
  • SO
  • WP#
  • NC

Auxiliary Microntroller

CTR UC.png

Monitors HOME button, WiFi switch, 3D slider, volume control slider. Controls LEDs, various power supplies.

Devices attached to I2C bus:

  • UC (master?)
  • Accelerometer (slave address 0x18)
  • SoC (master? slave?)