开发板\开发板1.pdf ......\开发板1.SCH ......\IC datasheet\PCF8563T-cn.pdf ......\............\IS62C256AL.pdf ......\............\tl431-TI.pdf ......\............\SP3232EET.pdf ......\............\74HC_HCT595.pdf ......\............\CH340DS1.pdf ......\............\74HC573.pdf ......\............\AMS1117.pdf ......\开发板2-带32K SRAM.pdf ......\开发板2-带32K SRAM.SCH ......\IC datasheet 开发板