嵌入式控制和連接解決方案的處理器模塊

　　盡管MCU繼續(xù)在邏輯和功能密度的擴(kuò)大，和今天的設(shè)計功能要求的性能是這樣的，往往很難提供整體解決方案。結(jié)果，嵌入式處理器在許多情況下實(shí)際上變形成一個模塊，集成了處理器、RAM、閃存、甚至電源以及其他支持分立元件。一種設(shè)計趨勢，開始在一個典型的PC處理器（處理器模塊開始取代單芯片解決方案，在Pentium II天）現(xiàn)在已經(jīng)完全出現(xiàn)在嵌入式空間所需的功能，并決定選擇一個模塊可以有效的行動最高效地實(shí)現(xiàn)了設(shè)計的時間。

　　本文探討了現(xiàn)成的模塊封裝單個功能以及整個系統(tǒng)處理能力。

　　Modular means replaceable

　　Although many simple functions can be reduced to basic logical functions， designing with discrete logic chips may not be the best approach， especially during the developmental phase where test and observation often means changing the logic or tweaking it a bit. Because of this， a programmable solution is the fastest answer since changes in logical function can take place without lifting a soldering iron.

　　Based on the Microchip PIC16C56a， the BS1-IC Basic Stamp module from Parallax is worth a close look （Figure 1）。 A simple SIP in-line socket on your carrier board couples power and signals to a small， programmable processor module. This is a 4 MHz micro module that runs very-small and limited basic programs using the PIC processor， providing eight I/O pins and up to 80 instructions in a program with only 16 bytes of RAM.