基于MC9328MX1嵌入式最小系统的设计

Designing an Embedded Minimum System Based on MC9328MX1

嵌入式系统是以应用为核心,对功能、可靠性、成本、体积、功耗有严格要求的软硬件可裁剪的专业计算机系统。由于ARM嵌入式体系结构的一致性以及外围电路的通用性。采用ARM内核的嵌入式最小系统的设计原则和设计方法基本相同。文中以MC9328MX1芯片为例,着重介绍了嵌入式微处理器最小系统存储器接口电路、电源电路、串行接口电路、JTAG接口电路、晶振电路和复位电路的一般设计方法。

An embedded system is a specialised computer system that is application-oriented, which has strict requirements on functionality, reliability, production cost, size, and power consumption, and offers hardware and software customisability. For the uniformity of the ARM embedded system structure and the universality of the peripheral circuit, the design principle of the minimum system with the ARM core embedded is almost similar to its design method. Taking the MC9328MX1 chip as an example, this paper describes the common methods of designing the memory interface circuit, power supply circuit, serial interface circuit, JTAG interface circuit, crystal oscillator circuit, and reset circuit of an embedded microprocessor minimum system in detail.