该ISP编程器采用ATMEGA8_DIP28作为主控制芯片，预留MOSI，MISO，RET，SCK，VCC，GND。6PIN接口，方便使用者根据需要连接目标板。 同时预留PROGRAMMING编程接口，用户可自行升级下载器固件。(The ISP programmer uses ATMEGA8_DIP28 as the master control chip, reserved for MOSI, MISO, RET, SCK, VCC, GND. 6PIN interface to fac