MAX7219 8-Digit 7-Segment Digital LED Display Overview:
This 8-digit red LED numeric display is driven by the MAX7219, using an SPI interface requiring three I/Os. The MAX7219 is an integrated serial input/output common-cathode driver, between the LEDs and the microcontroller. Only one external register is used to set the current of each LED segment.
This device was added to Parallax inventory as a quick demonstration to the sample code for the Propeller 2 SPIN/PASM SPI Driver used in the Propeller 2 Live Forum and P2 Quick Byte “SPI Driver Object”. It is compatible with all Parallax microcontrollers, to provide simple visual feedback for numbers and data.
MAX7219 8-Digit 7-Segment Digital LED Display Features:
- Compatible with 3.3V and 5V microcontrollers
- Measures 0.375” x 3.250” in size with 0.36” tall displays.
- 150 mA low-power shutdown mode
- Includes 5-pin straight and right-angle headers for soldering by customer
MAX7219 8-Digit 7-Segment Digital LED Display Wiring instructions:
- Vcc: 5VDC
- GND: GND
- DIN: P0
- CS: P1
- CLK: P2