stc全系列的单片机封装库，protel 99se格式，可以转成dxp等其他格式。我一直用这个，最近stc官网下不了，所以我共享出来-stc full range of single-chip package library, protel 99se format, can be converted into other formats dxp. I have been using this, the official website recently stc can not, so I sha

STC12系列单片机说明书及开发环境及相关应用实例-STC12 MCU development environment and associated specifications and application examples

12 位 3us DAC 串行输入可编程设置时间/功耗，电压 O/P 范围 = 2x 基准电压（stc12单片机程序）-12 bit DAC 3us serial input can be programmed to set the time/power, voltage O/P range = 2x reference voltage (STC12 microcontroller program)