MAX7219 7-segment LED Dot Matrix 8 Digit Digital Rohr Display Control Modul 3,3 V 5V Mikrocontroller Serielle fahrer DIYGBA

MAX7219 is an integrated serial input / output common-cathode display drivers, which connects the microprocessor and 8 digit 7-segment digital LED display, you can also connect a bar graph display or 64 separate LED. Includes an on-chip type B BCD encoders, multi-channel scanning loop, segment word driver, but also a 8x8 static RAM that stores each data. Only one external register is used to set the current of each LED segment. The entire device includes a 150μA low-power shutdown mode, analog and digital brightness control, a scan-limit register allows the user to display 1-8 bit data, there is an all LED light detection mode. PCV board four corners of the fixed copper stud, which can effectively precent short circuit accidents happen The module compatible of 5v/3.3v microcontroller(51/AVR/STM32...) VCC→5V DIN →P00 CLK→P02