ST SPEAr300 MPU嵌入式控制应用方案

ST 公司的SPEAr300 是采用ARM926EJ-S 核的嵌入式MPU，支持灵活的存储器，具有功能强大的连接特性和可编程的LCD接口。ARM926EJ-S 核工作频率高达333MHz，有高性能的8路DMA和动态节能特性，外接存储器LPDDR-333/DDR2-666接口，主要用在基于NAND闪存或NOR闪存的设备，数码相框，WiFi或IP电话，ATA PABX系统，8位或14位数码相机。本文介绍SPEAr300 MPU主要特别法庭性，功能方框图，系统架构框图以及EVALSPEAR600评估板主要特性，电路图和所用材料清单（BOM）。

The SPEAr300 is a member of the SPEAr family of embedded MPUs for networked devices. It is based on the powerful ARM926EJ-S processor (up to 333 MHz), widely used in applications where high computation performance is required.

In addition, SPEAr300 has an MMU that allows virtual memory management -- making the system compliant with Linux operating system. It also offers 16 KB of data cache, 16 KB of instruction cache, JTAG and ETM (embedded trace macro-cell) for debug operations.A full set of peripherals allows the system to be used in many applications, some typical applications being HMI, Security and VoIP phones.

SPEAr300主要特性：

● ARM926EJ-S 32-bit RISC CPU, up to 333 MHz

– 16 Kbytes of instruction cache, 16 Kbytes of data cache
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