Segment type LCD drive IP core design integrated with I/Os

Abstract

Abstract: A segment type LCD driver that integrated with analog and digital I/Os is proposed. Because the standard 0.18 μm technology I/O cells cannot drive LCD properly, a common IP attach to standard I/O cells which can drive the segment type LCD properly is designed, and thus it increases integration. This IP core uses 0.18 μm technology to accomplish 0 V, 1.1 V, 2.2 V and 3.3 V analog output controlled by digital circuit, while keeping the post-end flow free of analog wires. Chip’s test results show that this IP core can drive the LCD screen display properly. The layout area of this IP is 265.5 μm2.

Key words: segment type LCD driver, Intellectual Property core, I/O, level shifter, transition gate

摘要： 设计了一种集成于模拟/数字I/O的段码式LCD（Liquid Crystal Display）驱动IP核。针对0.18 μm工艺库中的标准I/O单元无法直接驱动段码式LCD，通过设计集成于I/O单元上的通用IP核（Intellectual Property Core），使该工艺下的I/O单元可直接驱动段码式LCD，提高了集成度。该设计采用0.18 μm工艺，实现数字电路控制选择0 V、1.1 V、2.2 V及3.3 V输出，同时后端流程可不涉及模拟布线。流片后的测试结果表明，该IP核可正常驱动段码式LCD显示，版图面积为265.5 μm2。

关键词: 段码式LCD驱动, IP核, 输入输出, 电压转换电路, 传输门

CHEN Jie, CHEN Lan. Segment type LCD drive IP core design integrated with I/Os[J]. Computer Engineering and Applications, 2015, 51(1): 59-61.

陈洁，陈岚. 一种集成于I/O的段码式LCD驱动IP核设计[J]. 计算机工程与应用, 2015, 51(1): 59-61.

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Segment type LCD drive IP core design integrated with I/Os

一种集成于I/O的段码式LCD驱动IP核设计

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