Hardware

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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 is one FCRAM(Fast Cycle RAM) in the 3DS.

DESCRIPTION

The Fujitsu MB82M8080-07L chip internally contains 2 dies, 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. MB81EDS516545 is suited for consumer application requiring high data band width with low power consumption.