：本应用笔记介绍了一个电脑程序，可免费下载，协助评估MAX6956和MAX6957 LED显示驱动器和GPIO端口扩展。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 ……