My test board uses pxa270 as the main chip, which requires a 13M and a 32.768K crystal oscillator. The current situation is that the two crystal oscillators have no waveform output. There is no proble...
A fan remote control circuit, the power supply is 4.7V, the control part uses MD2722PB. The fan starts as soon as the power is turned on, and there is no response when it is manually or strictly contr...
A data type questionThe program is as follows: void display(void){int y;uchar code rel[]={0,1,2,3,4,5,6,7}; // digital tube selectionuchar code led[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f...
Abstract: Aiming at the problem that the output power of conventional thyristor parallel resonant medium frequency power supply cannot reach the rated power during the melting period, a trigger contro...
I drew a minimum system board for F2812, and used a 25MHZ crystal. After soldering the circuit, I powered it on. Using an oscilloscope to look at the output of XCLKOUT, it was a 6.25MHZ clock signal. ...
SM8958 series products are 8-bit single-chip microcontrollers with built-in 32K bytes of flash memory and 1K bytes of on-chip RAM. It is a derivative of the 80C51 microcontroller family. The SM8958 PD...