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The Design and Display Management of LCD Display Unit in Embedded System

Ian W

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Abstract

A LCD controller is needed when a control and measure device based on embedded MCU expands lattice LCD display. It is necessary to arrange Chinese character mask database and draw graph. It should be an available method that combining embedded MCU LPC2148 and LCD display unit which based on LCD controller S1D13305. In this paper,the interface circuit,LCD digital con-trast adjustment circuit,etc. was given. LCD screen was set to 3 graphics layers combining in logic OR mode. Character,graph and cursor pattern put to different layers. 16 and 24 dots character mask database was stored in Flash of LPC2148. The display driver software and subprogram including character printing,graph drawing,cursor management and calendar and time management was de-signed. Display management of a mono 320x240 dots LCD was realized.

About this research paper

What this paper is about

A LCD controller is needed when a control and measure device based on embedded MCU expands lattice LCD display. It is necessary to arrange Chinese character mask database and draw graph. It should be an available method that combining embedded MCU LPC2148 and LCD display unit which based on LCD controller S1D13305. In this paper,the interface circuit,LCD digital con-trast adjustment circuit,etc. was given. LCD screen was set to 3 graphics layers combining in logic OR mode. Character,graph and cursor pattern put to different layers. 16 and 24 dots character mask database was stored in Flash of LPC2148. The display driver software and subprogram including character printing,graph drawing,cursor management and calendar and time management was de-signed. Display management of a mono 320x240 dots LCD was realized.

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Available abstract

A LCD controller is needed when a control and measure device based on embedded MCU expands lattice LCD display. It is necessary to arrange Chinese character mask database and draw graph. It should be an available method that combining embedded MCU LPC2148 and LCD display unit which based on LCD controller S1D13305. In this paper,the interface circuit,LCD digital con-trast adjustment circuit,etc. was given. LCD screen was set to 3 graphics layers combining in logic OR mode. Character,graph and cursor pattern put to different layers. 16 and 24 dots character mask database was stored in Flash of LPC2148. The display driver software and subprogram including character printing,graph drawing,cursor management and calendar and time management was de-signed. Display management of a mono 320x240 dots LCD was realized.

Key concepts: Liquid-crystal display, Computer science, Microcontroller, Computer hardware, Computer graphics (images), Graphics, Cursor (databases), Graph

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