LED flashing - ARM Proteus experiment Experimental principle An I/O port of ARM (LPC21XX) is connected to the LED, and the LED is set to on and off by sending 0 and 1 to it. Proteus simulation circuit
One of the development trends of the Internet of Things is LPWAN (Low Power Wide Area Internet of Things) represented by NB-IoT technology. In this application scenario, the terminal is mainly powered
Is it necessary to connect the vccio, gnd or gck in the cpld board? For example, if I constrain the system clock input clk to other pins in the pin constraints without connecting gck, is it okay?
20 40V batteries are connected in series to provide power. How can we receive a signal to controllably cut it off (only for emergency use)? And ensure that there is no energy loss during normal use. I
A batch of modem devices have failed. Only the first power-on function is not normal. After restarting, the power-on function is normal. However, after a period of time (1 hour), the first power-on fu