Microchip Technology SAM3A ARM® Cortex®-M3 Flash-Based Microcontrollers

Microchip Technology SAM3A ARM® Cortex®-M3 Flash-Based Microcontrollers feature connectivity peripherals, including a dual CAN interface and high-speed USB (HS USB) MiniHost and device with an on-chip physical layer (PHY). Devices are available in a dual-bank configuration of 256KB and 512KB Flash total and in 100-pin QFP and BGA package options. The architecture is designed to support high-speed data transfers and includes a multi-layer bus matrix plus dual SRAM banks, direct memory access (DMA) channels, and a peripheral DMA controller (PDC) for applications supporting multi-task operations. The SAM3A series is ideal for networking applications in the industrial embedded market and in home and building automation, smart grids, and industrial automation.

Features

ARM® Cortex®-M3 revision 2.0 Core running at up to 84MHz
Memories
- 16kb ROM with embedded bootloader routines (UART, USB) and IAP routines
- SRAM, NOR, NAND support; NAND Flash controller with 4kb RAM buffer and ECC Static Memory Controllers (SMC)
- SDRAM Controller
System
- Embedded voltage regulator for single supply operation
- POR, BOD, and Watchdog for safe reset
- Quartz or ceramic resonator oscillators: 3MHz to 20MHz main and optional low power 32.768kHz for RTC or device clock
- High precision 8MHz/12MHz factory trimmed internal RC oscillator with 4MHz 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
- Up to 17 peripheral DMA (PDC) channels and 6-channel central DMA plus dedicated DMA for High-Speed USB Mini Host/Device and Ethernet MAC

Low Power Modes
- Sleep and backup modes, down to 2.5μA in backup mode
- VDDBU pin, RTC, eight 32-bit backup registers backup domains
- Ultra-low-power RTC
Peripherals
- 480Mbps, 4kb FIFO, up to 10 bidirectional Endpoints, dedicated DMA USB 2.0 device/mini host
- Up to 8-channel 16-bit PWM (PWMC) with complementary output, fault input, 12-bit dead time generator counter for motor control
- One Ethernet MAC 10/100 (EMAC) with dedicated DMA
- Two CAN controllers with eight mailboxes
- One True Random Number Generator (TRNG)