Hardware

Specifications

According to iFixit.com (source):

Type	Name	Datasheet	Source
SoC	Nintendo 1048 0H (Custom): CPU, GPU & DSP all on one chip.	N/A	N/A
Processor Core	ARM11 Multiprocessor Core 2x 268 MHz	N/A	[1]
GPU	Digital Media Professionals Pica 268MHz	N/A	[2]
FCRAM	2x64MB Fujitsu MB82M8080-07L	[3][4] [5]	[6]
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]	--
Accelerometer	ST Micro 2048 33DH X1MAQ Accelerometer Model LIS331DH	[8]	--
Wifi	802.11b/g Atheros AR6014	[9]	N/A
Infrared IC	NXP infrared IC, "S750 0803 TSD031C"	N/A	[10]
Auxiliary Microcontroller	UC CTR, custom Nintendo microcontroller	N/A	N/A

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 [11].

FCRAM

There are two FCRAM(Fast Cycle RAM) in the 3DS.

DESCRIPTION

The Fujitsu MB81EDS516545 is a CMOS Fast Cycle Random Access Memory (FCRAM*) with Low Power Double Data Rate (LPDDR) SDRAM Interface containing 536, 870, 912 storages accessible in a 64-bit format. MB81EDS516545 is suited for consumer application requiring high data band width with low power consumption.

Images

Front

High Resolution

Back

High Resolution

NAND pinout

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

WiFi dongle pinout

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

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?)