The constant current and high brush energy-saving king P 10 Danhong LED display unit board is a brand-new P 10 Danhong LED display unit board designed by Fujian Taide with 8×4 display scanning mode single-wire communication LED constant current driving special circuit technology. This new technology chip integrates MCU digital interface, data latch, scanning output, constant current drive and other circuits, that is, it integrates traditional circuits such as 74HC245, 74HC 138, 74HC(T)04 and scanning chip 4953. Sending data to the chip memory through a single communication line of the single chip microcomputer saves the port resources of the single chip microcomputer, and has the advantages of simple operation, excellent performance, stable and reliable quality and high cost performance.

The product features of constant current and high brush energy-saving king P 10 Danhong unit board are as follows:

1, 8 high-precision constant current outputs, (VDD=3.5V-5.5V) constant current value 16 level adjustable. SG port constant current output 3.0-30mA software can be adjusted. By adjusting the current to adjust the screen brightness, the maximum load power of the power supply can be reduced, and the stability and life of the power supply can be improved. Wide voltage operation can reduce the power of the screen at low voltage, save energy by more than 30% at most, and prolong the life of the screen;

2. Constant-current IC has built-in high refresh circuit and blanking module, adopts high-voltage power CMOS process, and the refresh rate exceeds 4K. Compared with the traditional constant voltage output 595 scheme, the text and picture are more uniform, and there is no ghost when brushing high, and the color consistency effect is better. When the lamp is open or short-circuited, there is no Mao Mao and cross phenomenon at all.

3. Single-wire serial cascade interface, which reduces the number of wires (2X3P flat cable) and supports long cascade (more than 4096 points in length). Data can be received and decoded through a signal line. Built-in RC oscillation and clock synchronization according to the signal on the data line, after receiving the data of this unit, the subsequent data can be automatically shaped and sent to the lower level through the data output terminal, and the signal will not be distorted or attenuated as the cascade becomes farther away, thus enhancing the stability and anti-interference ability of the screen body;

4. The driver chip is in 8×4 display scanning mode, although the corresponding display is 8×4=32 points, which is convenient for after-sales maintenance; The cell board has the function of signal loop backup, and the failure of any chip in the cell board will not affect the normal work of chips in other areas, which obviously reduces the maintenance probability of the screen body;