Microchip Technology, Inc. ATSAM3A4C

Based on the ARM® Cortex®-M3 processor, the Microchip's SAM3A4C runs at 84MHz and features 256KB of flash memory in 2 x 128KB banks and 64KB of SRAM in 2 x 32KB banks.

Its highly-integrated peripheral set includes dual CAN, High Speed USB MiniHost and device with on-chip PHY, high-speed SD/SDIO/MMC, and multiple USARTs, SPIs, TWIs (I²C), and one I2S.

The SAM3A4C also features a 12-bit ADC/DAC, temperature sensor, 32-bit timers, PWM timer and RTC.

It supports the Microchip QTouch Library for easy implementation of buttons, sliders and wheels.

The device operates from 1.62V to 3.6V and is available in 100-pin QFP and BGA packages.

Additional Features

Microcontroller Features Core
• ARM Cortex-M3 revision 2.0 running at up to 84 MHz
• Memory Protection Unit (MPU)
• 24-bit SysTick Counter
• Thumb®-2 instruction set
• Nested Vector Interrupt Controller
Memories
• 2 x 128 Kbytes embedded Flash, 128-bit wide access, memory accelerator, dual bank
• 32 + 32 Kbytes embedded SRAM with dual banks
• 16 Kbytes ROM with embedded bootloader routines (UART, USB) and IAP routines
System
• Embedded voltage regulator for single-supply operation
• POR, BOD and Watchdog for safe reset
• Quartz or resonator oscillators: 3 to 20 MHz main 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 fast device startup
• Slow Clock Internal RC oscillator as permanent clock for device clock in low power mode
• One PLL for device clock and one dedicated PLL for USB 2.0 High Speed Mini Host/Device
• Temperature Sensor
• 15 peripheral DMA (PDC) channels and 6-channel central DMA plus dedicated DMA for High-Speed USB Mini Host/Device
Low Power modes
• Sleep, Wait and Backup modes, down to 2.5 μA in Backup mode with RTC, RTT, and GPBR
Package
• 100-lead LQFP – 14 x 14 mm, pitch 0.5 mm
• 100-ball TFBGA – 9 x 9 mm, pitch 0.8 mm
Temperature operating range
• Industrial (-40° C to +85° C)
Peripheral Features
• USB 2.0 Device/Mini Host: 480 Mbps, 4 Kbyte FIFO, up to 10 bidirectional Endpoints, dedicated DMA
• 3 USARTs (ISO7816, IrDA®, Flow Control, SPI, Manchester and LIN support) and one UART
• 2 TWI (I2C compatible), up to 6 SPIs, 1 SSC (I2S), 1 HSMCI (SDIO/SD/MMC) with up to 2 slots
• 9-channel 32-bit Timer Counter (TC) for capture, compare and PWM mode, Quadrature Decoder Logic and 2-bit Gray Up/Down Counter for Stepper Motor
• 32-bit low-power Real-time Timer (RTT) and low-power Real-time Clock (RTC) with calendar and alarm features
• 256-bit General Purpose Backup Registers (GPBR)
• 2 CAN Controllers with 8 Mailboxes
• True Random Number Generator (TRNG)
I/O
• 63 I/O lines with external interrupt capability (edge or level sensitivity), debouncing, glitch filtering and on-die Series Resistor Termination
• Six 32-bit Parallel Input/Output Controllers
Analog Features
• 16-channel 12-bit 1 msps ADC with differential input mode and programmable gain stage
• 2-channel 12-bit 1 msps DAC
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