Features
•
Core
– ARM
®
Cortex
®
-M3 revision 2.0 running at up to 48 MHz
– Thumb
®
-2 instruction
– 24-bit SysTick Counter
– Nested Vector Interrupt Controller
Pin-to-pin compatible with SAM7S legacy products (48- and 64-pin versions) and
SAM3S (48-, 64- and 100-pin versions)
Memories
– From 16 to 256 Kbytes embedded Flash, 128-bit wide access, memory accelerator,
single plane
– From 4 to 24 Kbytes embedded SRAM
– 16 Kbytes ROM with embedded bootloader routines (UART) and IAP routines
System
– Embedded voltage regulator for single supply operation
– Power-on-Reset (POR), Brown-out Detector (BOD) and Watchdog for safe
operation
– Quartz or ceramic resonator oscillators: 3 to 20 MHz main power with Failure
Detection and optional low power 32.768 kHz for RTC or device clock
– High precision 8/12 MHz factory trimmed internal RC oscillator with 4 MHz default
frequency for device startup. In-application trimming access for frequency
adjustment
– Slow Clock Internal RC oscillator as permanent low-power mode device clock
– One PLL up to 130 MHz for device clock
– Up to 10 peripheral DMA (PDC) channels
Low Power Modes
– Sleep and Backup modes, down to 3 µA in Backup mode
– Ultra low power RTC
Peripherals
– Up to 2 USARTs with RS-485 and SPI mode support. One USART (USART0) has
ISO7816, IrDA® and PDC support in addition
– Two 2-wire UARTs
– 2 Two Wire Interface (I2C compatible), 1 SPI
– Up to 6 Three-Channel 16-bit Timer/Counter with capture, waveform, compare and
PWM mode. Quadrature Decoder Logic and 2-bit Gray Up/Down Counter for
Stepper Motor
– 4-channel 16-bit PWM
– 32-bit Real-time Timer and RTC with calendar and alarm features
– Up to 16 channels, 384 KSPS 10-bit ADC
– One 500 KSPS 10-bit DAC
I/O
– Up to 79 I/O lines with external interrupt capability (edge or level sensitivity),
debouncing, glitch filtering and on-die Series Resistor Termination
– Three 32-bit Parallel Input/Output Controllers
Packages
– 100-lead LQFP, 14 x 14 mm, pitch 0.5 mm/100-ball TFBGA, 9 x 9 mm, pitch 0.8 mm
– 64-lead LQFP, 10 x 10 mm, pitch 0.5 mm/64-pad QFN 9x9 mm, pitch 0.5 mm
– 48-lead LQFP, 7 x 7 mm, pitch 0.5 mm/48-pad QFN 7x7 mm, pitch 0.5 mm
•
•
•
AT91SAM
ARM-based
Flash MCU
SAM3N Series
•
•
Summary
•
•
11011BS–ATARM–22-Feb-12
1. SAM3N Description
Atmel's SAM3N 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 48 MHz
and features up to 256 Kbytes of Flash and up to 24 Kbytes of SRAM. The peripheral set
includes 2x USARTs, 2x UARTs, 2x TWIs, 3x SPI, as well as 1 PWM timer, 6x general purpose
16-bit timers, an RTC, a 10-bit ADC and a 10-bit DAC.
The SAM3N series is ready for capacitive touch thanks to the QTouch library, offering an easy
way to implement buttons, wheels and sliders.
The SAM3N device is an entry-level general purpose microcontroller. That makes the SAM3N
the ideal starting point to move from 8- /16-bit to 32-bit microcontrollers.
It operates from 1.62V to 3.6V and is available in 48-pin, 64-pin and 100-pin QFP, 48-pin and
64-pin QFN, and 100-pin BGA packages.
The SAM3N series is the ideal migration path from the SAM3S for applications that require a
reduced BOM cost. The SAM3N series is pin-to-pin compatible with the SAM3S series. Its
aggressive price point and high level of integration pushes its scope of use far into cost-sensi-
tive, high-volume applications.
2
SAM3N Summary
11011BS–ATARM–22-Feb-12
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