SAM3U datasheet(2/59 Pages) ATMEL

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6430ES–ATARM–22-Aug-11

SAM3U Series

SAM3U Description

Atmel's SAM3U series is a member of a family of Flash microcontrollers based on the high per-

formance 32-bit ARM Cortex-M3 RISC processor. It operates at a maximum speed of 96 MHz

and features up to 256 Kbytes of Flash and up to 52 Kbytes of SRAM. The peripheral set

includes a High Speed USB Device port with embedded transceiver, a High Speed MCI for

SDIO/SD/MMC, an External Bus Interface with NAND Flash controller, up to 4xUSARTs

(SAM3U1C/2C/4C have 3), up to 2xTWIs (SAM3U1C/2C/4C have 1), up to 5xSPIs

SAM3U1C/2C/4C have 4), as well as 4xPWM timers, 3xgeneral purpose 16-bit timers, an RTC,

a 12-bit ADC and a 10-bit ADC.

The SAM3U architecture is specifically designed to sustain high speed data transfers. It includes

a multi-layer bus matrix as well as multiple SRAM banks, PDC and DMA channels that enable it

to run tasks in parallel and maximize data throughput.

It can operate from 1.62V to 3.6V and comes in 100-pin and 144-pin LQFP and BGA packages.

The SAM3U device is particularly well suited for USB applications: data loggers, PC peripherals

and any high speed bridge (USB to SDIO, USB to SPI, USB to External Bus Interface).

1.1

Configuration Summary

The SAM3U series differ in memory sizes, package and features list. Table 1-1 summarizes the

configurations of the six devices.

Note:

1. The SRAM size takes into account the 4-Kbyte RAM buffer of the NAND Flash Controller (NFC) which can be used by the

core if not used by the NFC.

Table 1-1.

Configuration Summary

Device

Flash

Organization SRAM

Number

of PIOs

Number

USARTs

Number

of TWI

FWUP,

SHDN

pins

External Bus

Interface

HSMCI

data

size

Package

ADC

SAM3U4E

2x128

Kbytes

dual plane

Kbytes

Yes

8 or 16 bits,

4 chip selects,

24-bit address

8 bits

LQFP144

BGA144

2 (8+ 8

channels)

SAM3U2E

128

Kbytes

single plane

Kbytes

Yes

8 or 16 bits,

4 chip selects

24-bit address

8 bits

LQFP144

BGA144

2 (8+ 8

channels)

SAM3U1E

Kbytes

single plane

Kbytes

Yes

8 or 16 bits,

4 chip selects,

24-bit address

8 bits

LQFP144

BGA144

2 (8+ 8

channels)

SAM3U4C

2 x 128

Kbytes

dual plane

Kbytes

FWUP

8 bits,

2 chip selects,

8-bit address

4 bits

LQFP100

BGA100

2 (4+ 4

channels)

SAM3U2C

128

Kbytes

single plane

Kbytes

FWUP

8 bits,

2 chip selects, 8-

bit address

4 bits

LQFP100

BGA100

2 (4+ 4

channels)

SAM3U1C

Kbytes

single plane

Kbytes

FWUP

8 bits

2 chip selects,

8-bit address

4 bits

LQFP100

BGA100

2 (4+ 4

channels)

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