说明：  HT1621是128点内存映象和多功能的LCD驱动器，HT1621的软件配置特性使它适用于多种LCD应用场合，包括LCD模块和显示子系统。用于连接主控制器和HT1621的管脚只有4或5条，HT1621还有一个节电命令用于降低系统功耗
(HT1621 is the 128 bit memory mapping and multi function LCD driver, software configuration characteristics of HT1621 make it suitable for multiple LCD applications, including LCD module and display subsystem. For a pin connected with the main controller and the HT1621 only 4 or 5, HT1621 has a power saving command is used to reduce the power consumption of the system.)