MSP430F2131芯片数据手册，对于型号众多的MSP430单片机，一定要针对性地看对应型号的单片机数据手册，以用注意IO口灌拉电流大小，极限值，以免误操作-MSP430F2131 chip data sheet, for the model number of the MSP430 MCU, we must look at specific types of microcontroller data sheet corresponds to pull with attention to sink current IO port size limit, so as to avoid misuse