The Atmel® SAM3 family of ARM® Cortex™-M3 Flash-based microcontrollers (MCU) is expanding with 40 new devices in the mix that provide more memory options and more connectivity. With this high-performance, highly integrated and power-efficient portfolio, you’ll find just the right devices to meet your unique design requirements.
A powerful new family of microcontrollers from Atmel with Cortex™ M3 cores (rev 2.0). The new microcontrollers are energy efficient and the supply voltages range from 1.62 to 3.6 V. They are designed to make circuit board layouts simpler and keep system costs low. The circuits have a broad selection of interfaces and support Atmel’s touch control system, QTouch.
SAM3N – (Entry point) Entry-level model to ARM Cortex M3 technology with a 3-layer bus (AHB), 10 DMA channels and clock frequencies up to 48 MHz. UART, SPI and I2C interfaces. Pin-to-pin compatible with the SAM7S and SAM3S series. Up to 79 I/Os, 48-/64-/100-pin packages.
SAM3S – (General purpose) Mid-range model with a 4-layer bus, 21 DMA channels and clock frequencies up to 64 MHz. Full-speed (FS) USB, high-speed SD/SDIO/MMC plus USART and SPI. Pin-to-pin compatible with SAM7S. Up to 79 I/Os, 48-/64-/100-pin packages.
SAM3U – (High-speed) Fast 100 Mbps microcontroller for more advanced applications with complex communications. 5-layer bus, 22 DMA channels and clock frequencies up to 96 MHz. 480 Mbps high-speed USB, high-speed SD/SDIO/MMC plus USART and SPI. Up to 96 I/Os, 100-/144-pin packages.
SAM3 family – NEW 32-bit ARM Microcontroller - [Link]