这是一个STC15单片机控制射频芯片RC522的电路图，设计严谨，包括原理图和印制板PCB图，物料清单和元件价格，电路板已经实际使用考验，请放心使用(This is a STC15 microcontroller control RF chip RC522 circuit diagram, rigorous design, including schematics and printed board PCB diagram, bill of materials and component pri