The MAX7219CWG+ from Analog Devices is a single-chip 8-digit LED display driver. It features a 3-wire serial interface and is compatible with SPI and I²C protocols. The MAX7219CWG+ features high brightness LEDs, selectable segment current and multiplex rate, brightness control, decode/no-decode mode, and shutdown mode. It also contains Low-power operation and 31 programmable functions. The device includes an integrated power supply and is housed in an 8-pin SOIC package. This product-line is suitable for automotive displays, indicating and warning panels, as well as general industrial and harsh environment applications.