摘要： 本应用指南描述了一个电脑程序，可下载免费，协助 MAX6956 和 MAX6957 LED 显示驱动程序和 GPIO （端口扩展器) 的评价。Maxim > App Notes > AUTOMOTIVE DISPLAY DRIVERS Keywords: GPIO, port expanders, static LED, LED display drivers, LED drivers, display drivers, SPI, I2C, serial, Jun 28, 2002 blink, 3V APPLICATION NOTE 1142 Experimenting with the MAX6956 and MAX6957 SPI and IC GPIO and LED Display Drivers from a PC Abstract: This application note describes a PC program, downloadable free, to assist evaluation of the MAX6956 and MAX6957 LED display drivers and GPIO (port expanders). The MAX6956 and MAX6957 are versatile 28-segment LED display drivers which allow any of the outputs to be configured as general purpose inputs/outputs (GPIO). Control is made through a high-speed SPI (MAX6957) or IC (MAX6956) serial interface. This application note describes a utility program which allows a MAX6957 ……