Divide and Conquer Works for Dual-Core MCUs， Too

　　NXP半導(dǎo)體lpc4350是一個32位的ARM?皮質(zhì)?-第一個實(shí)現(xiàn)M0／M4在單芯片。M4可以致力于高速數(shù)據(jù)平面的處理而M0處理較低速度的控制任務(wù)。通過適當(dāng)劃分應(yīng)用軟件，設(shè)計(jì)者可以利用芯片的異構(gòu)多核體系結(jié)構(gòu)來創(chuàng)建能夠同時高效地處理多個任務(wù)的應(yīng)用程序。目標(biāo)應(yīng)用包括電機(jī)控制，工業(yè)自動化，白色家電，嵌入式音頻，RFID閱讀器和電源管理。

　　本文的lpc4350功能包括評估套件的lpc4300親自審查，演示了如何編碼、下載、調(diào)試程序。這也凸顯了部分的獨(dú)特狀態(tài)可配置定時器（SCT）和串行GPIO（sgpio）接口。。

　　Working ARM in ARM

　　The dual-core LPC4350 joins two code- and tool-compatible ARM processors that share the same buses and can work closely together. The 32-bit ARM Cortex-M4 incorporates a three-stage pipeline with separate local instruction and data buses， as well as a third bus for peripherals. It also includes an internal prefetch unit that supports speculative branching. The M4 core supports single-cycle DSP and SIMD instructions and includes an integrated hardware floating-point processor. In any given application， the M4 core does the high-speed heavy lifting.

　　The low-power Cortex-M0 core on the other hand， typically handles non-time-critical supervisory chores; it is designed as a low-cost 32-bit replacement for existing 8/16-bit microcontrollers. Like its big brother the M4， the M0 processor offers up to 204 MHz performance but with a simple instruction set and reduced code size.