Z8 Encore！作為一個(gè)液晶驅(qū)動(dòng)程序

　　驅(qū)動(dòng)多路復(fù)用，4段LCD使用8位單片機(jī)的一個(gè)很簡(jiǎn)單的問(wèn)題，一個(gè)小的BOM，和下載的代碼在這篇文章中提供的。

　　直接驅(qū)動(dòng)LCD可以在沒(méi)有專用LCD驅(qū)動(dòng)的情況下完成，而且只需要很少的額外資源。LCD有兩種類型：靜態(tài)和多路復(fù)用。本文論述了復(fù)用LCD與Zilog的Z8 Encore結(jié)合編程！?單片機(jī)。

　　Z8 Encore！閃存微控制器概述

　　Zilog公司的Z8 Encore！產(chǎn)品是基于ez8?CPU介紹閃存Zilog廣泛的8位微控制器。閃存在電路編程能力允許更快的開發(fā)時(shí)間和程序的變化在外地。高性能，登記登記的ez8核心架構(gòu)保持與Zilog的Z8單片機(jī)流行的向后兼容性。

　　Z8 Encore！MCU結(jié)合一個(gè)20 MHz的核心與閃存、SRAM線性登記，以及一系列廣泛的片上外設(shè)。這些設(shè)備使Z8 Encore！MCU適用于各種應(yīng)用，包括電機(jī)控制、安全系統(tǒng)、家用電器、個(gè)人電子設(shè)備和傳感器。

　　Driving LCDs

　　A static LCD features a separate pin for each segment of the LCD and a common backplane pin. A requirement for illuminating a segment is to bias the segment in opposition to the backplane. An additional requirement is that LCDs cannot allow direct current （DC） to be present on a segment.

　　To prevent DC on a segment， the backplane is driven with a low-frequency square wave， and the segments are toggled with respect to the backplane.

　　Multiplex LCDs feature multiple backplanes， and a single segment pin is shared among multiple segments. To illuminate a particular segment， the segment pin is driven in opposition to the backplane， and the unused backplanes remain in an IDLE state. The backplanes are again driven with a low-frequency square wave to prevent DC bias on the segments.