MAX7219 digital display control module
Link: https://pan.baidu.com/s/1KFq6Xed6MF0nl_X_qBBVlA extraction code: dfg0
The MAX7219 is an integrated serial input/output common cathode display driver that connects a microprocessor to an 8-digit 7-segment digital LED display, as well as to a bar chart display or 64 separate leds. It includes an on-chip BCD encoder, a multipath scanning loop, a segment driver, and an 8-by-8 static RAM to store each piece of data. Only one external register is used to set the segment current of each LED.
A convenient four-wire serial interface can connect all common microprocessors. Each data can be addressed without the need to overwrite all displays when updated. MAX7219 also allows users to choose to encode or not encode each piece of data.
The entire device includes A 150-micron low-power shutdown mode, analog and digital brightness control, A scan limit register that allows the user to display 1-8 bits of data, and A detection mode that lets all leds glow.
The entire device includes A 150-micron low-power shutdown mode, analog and digital brightness control, A scan limit register that allows the user to display 1-8 bits of data, and A detection mode that lets all leds glow.
Only need 3 IO ports to drive 1 dot matrix! No flicker when dot matrix display! Support cascading!
Module parameters:
1. A single module can drive an 8*8 common negative lattice
2. Module working voltage: 5V
3. Module size: 26.5 cm long X 6.4 cm wide X 1.3 cm high
4. With 64 fixing screw holes, the aperture is 3mm
5. Module with input and output interface, support multiple modules cascade
