Introduction - If you have any usage issues, please Google them yourself
Recommend LDO model changes to the CAT6219 offers a CAT6218 just after level current of 500mA, the reasons for the replacement: bulk CAT6219, our company has nothing to do with the actual performance of the application. 2.ISP pull-down resistor to 100 ohms, allowing the application to enter the ISP download firmware. New BOOT pin and DEF pin BOOT pin low to force into the Boot mode DEF pin is pulled low, configuration, restore factory settings