Microchip AT91SAM9263B-CU-100: A Comprehensive Overview of the ARM926EJ-S Microcontroller
The Microchip AT91SAM9263B-CU-100 stands as a highly integrated system-on-chip (SoC) microcontroller, engineered to deliver a potent combination of processing performance and peripheral integration. Based on the ARM926EJ-S processor core, this device is tailored for a wide array of demanding embedded applications, including industrial automation, point-of-sale terminals, network gateways, and human-machine interfaces (HMIs).
At the heart of this microcontroller lies the ARM926EJ-S RISC processor, capable of operating at speeds up to 200 MHz. This core incorporates a Java accelerator and a Memory Management Unit (MMU), making it suitable for complex operating systems like Linux, Windows CE, and other real-time operating systems (RTOS). Its efficient 5-stage pipeline architecture ensures a strong balance between high performance and low power consumption.
A key strength of the AT91SAM9263B-CU-100 is its exceptional peripheral set, designed to minimize the need for external components. It features an integrated LCD controller supporting both STN and TFT color displays, which is crucial for applications requiring a graphical user interface. For connectivity, it is equipped with a 10/100 Mbps Ethernet MAC with a dedicated DMA controller, facilitating robust network communication. Furthermore, it includes a full-speed USB 2.0 Host and Device controller, multiple USARTs, SPIs, TWIs (I²C), and a sophisticated 3-channel timer/counter unit.
The memory architecture is another highlight, offering extensive on-chip resources and flexible external memory support. It provides 64 KB of internal SRAM and 32 KB of ROM for efficient code execution. Crucially, it includes an External Bus Interface (EBI) that supports SDRAM, Static Memory, NAND Flash, and CompactFlash. This allows designers to easily expand memory capacity to meet the requirements of their specific application, ensuring smooth operation of feature-rich software stacks.
The device is offered in a 100-pin LFBGA package (CU-100), making it suitable for space-constrained PCB designs. Its operating voltage ranges from 1.65V to 1.95V for the core and 3.0V to 3.6V for the I/Os, reflecting a modern low-power design philosophy.
ICGOODFIND: The AT91SAM9263B-CU-100 is a powerful and versatile ARM9-based microcontroller from Microchip. Its blend of a 200 MHz ARM core, advanced connectivity options like Ethernet and USB, and an integrated LCD controller makes it an outstanding solution for developing connected, graphics-enabled embedded systems with minimal external circuitry.
Keywords: ARM926EJ-S, Embedded Systems, Ethernet MAC, LCD Controller, External Bus Interface (EBI)
