Status: Not Recommended for new designs
Microchip's SAM3N0A is a member of the SAM3N series of microcontrollers based on the high-performance 32-bit ARM® Cortex®-M3 RISC processor.
It operates at a maximum speed of 48MHz and features 32KB of flash memory and 8KB of SRAM. The peripheral set includes a USART, two UARTs, two SPIs, two TWIs (I2C), PWM timer, six 16-bit timers, RTC, and a 10-bit ADC.
The SAM3N0A is ready for capacitive touch thanks to the Microchip QTouch library, offering an easy way to implement buttons, sliders, and wheels.
It operates from 1.62V to 3.6V and is available in 48-pin LQFP and QFN packages.
ARM Cortex-M3 revision 2.0 running at up to 48 MHz
Memory Protection Unit (MPU)
24-bit SysTick Counter
Nested Vector Interrupt Controller
DSP Instructions, Thumb®-2 instruction set
32 Kbytes embedded Flash, 128-bit wide access, memory accelerator, single plane
8 Kbytes embedded SRAM
16 Kbytes ROM with embedded boot loader routines (UART, USB) and IAP routines
Embedded voltage regulator for single-supply operation
Power-on-Reset (POR), Brown-out Detector (BOD) and Dual Watchdog for Safe Operation
Quartz or ceramic resonator oscillators: 3 to 20 MHz with clock failure detection and 32.768 kHz for RTT or system clock
Slow clock internal RC oscillator as permanent low-power mode device clock
One PLL up to 130 MHz for device clock
8 Peripheral DMA (PDC) channels
Low Power modes
Sleep, Wait, and Backup modes, down to 1.2 μA in Backup mode with RTC, RTT, and 256-bit GPBR
48-lead LQFP – 7 x 7 mm, pitch 0.5 mm
48-pad QFN – 7 x 7 mm, pitch 0.5 mm
Temperature operating range
1 USARTs with RS-485 and SPI mode support. One USART (USART0) has ISO7816, IrDA® and PDC support in addition
Two 2-wire UARTs
Two 2-wire Interfaces (I2C compatible)
Up to two 3-channel 16-bit Timer Counters 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 low-power Real-time Timer (RTT)
Low-power Real-time Clock (RTC) with calendar and alarm features
34 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
8 channels, 384 ksps 10-bit ADC
Debugger Development Support
Serial Wire/JTAG Debug Port(SWJ-DP)
Debug access to all memories and registers in the system, including Cortex-M4 register bank when the core is running, halted, or held in reset.
Serial Wire Debug Port (SW-DP) and Serial Wire JTAG Debug Port (SWJ-DP) debug access.
Flash Patch and Breakpoint (FPB) unit for implementing breakpoints and code patches.
Data Watchpoint and Trace (DWT) unit for implementing watchpoints, data tracing, and system profiling.
Instrumentation Trace Macrocell (ITM) for support of printf style debugging.
IEEE1149.1 JTAG Boundary-scan on all digital pins.
Integrated Software Libraries and Tools
ASF-Atmel software Framework – SAM software development framework
Integrated in the Atmel Studio IDE with a graphical user interface or available as standalone for GCC, IAR compilers.
DMA support, Interrupt handlers Driver support
USB, TCP/IP, Wi-Fi and Bluetooth, Numerous USB classes, DHCP and Wi-Fi encryption Stacks
RTOS integration, FreeRTOS is a core component
SAM-ICE is a JTAG emulator designed for SAMA5, SAM3, SAM4, SAM7 and SAM9 ARM® core-based MCUs and MPUs, including Thumb mode. It supports download speeds up to 720K Bytes per second and maximum JTAG speeds up to 12 MHZ. It also supports Serial Wire Debug (SWD) and Serial Wire Viewer (SWV) from SAM-ICE hardware V6.
Power Debugger is a powerful development tool for debugging and programming AVR microcontrollers using UPDI, JTAG, PDI, debugWIRE, aWire, TPI or SPI target interfaces and ARM® Cortex®-M based SAM microcontrollers using JTAG or SWD target interfaces.
In addition the Power Debugger has two independent current sensing channels for measuring and optimizing the power consumption of...
Atmel-ICE is a powerful development tool for debugging and programming ARM® Cortex®-M based SAM and AVR microcontrollers with on-chip debug capability.
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