The Microchip AT91SAM9N12-CU is a powerful and versatile embedded processor designed to deliver efficient performance for industrial and consumer. Built around the ARM926EJ-S™ processor core, it operates at speeds of up to 400 MHz and features 16 KB each of data and instruction cache with a memory management unit for optimal system performance. Its integrated 32 KB SRAM and 128 KB ROM, along with support for DDR2, SDR, NAND, and static memories via a 32-bit external bus interface, provide robust memory capabilities to handle demanding tasks. The processor also includes an error correction mechanism for NAND memory via a 24-bit Programmable Multi-bit Error Correcting Code (PMECC), ensuring data integrity during operation.
With a rich set of peripherals, the AT91SAM9N12-CU supports features such as an LCD controller, dual USB interfaces (host and device with full-speed transceivers), multiple UARTs and USARTs, a high-speed SD/SDIO host controller, timers, ADCs, and PWMs. Its advanced power management capabilities include low-power modes, a shutdown controller with battery backup registers, software-programmable power optimization, and internal oscillators for system stability. For safety, it incorporates features like crystal failure detection, an independent watchdog, write protection registers, and power-on reset cells. This makes the AT91SAM9N12-CU an excellent choice for low-power, high-performance, and secure embedded designs.
