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MAX7221 Common-Cathode Display Driver
A compact and versatile display driver for LED displays and bar-graphs
- Spec name: Compact, serial input/output common-cathode display driver
- Spec name: Interfacing microprocessors to 7-segment numeric LED displays or 64 individual LEDs
- Spec name: BCD code-B decoder, multiplex scan circuitry, segment and digit drivers included
- Spec name: 8x8 static RAM for storing each digit
- Spec name: Only one external resistor needed to set segment current for all LEDs
- Spec name: Compatible with SPI™, QSPI™, and MICROWIRE™ interfaces
- Spec name: Slew-rate-limited segment drivers for reduced EMI
Top Features:
- 10MHz Serial Interface
- Individual LED Segment Control
- Decode/No-Decode Digit Selection
- 150µA Low-Power Shutdown (Data Retained)
A convenient 4-wire serial interface allows easy connection to common microprocessors. The MAX7221 enables individual digit addressing and updating without affecting the entire display. Users can select between codeB decoding or no-decode for each digit. Additionally, the device features a low-power shutdown mode, brightness control, a scan limit register, and a test mode for all LEDs.
- Applications: Bar-Graph Displays, Industrial Controllers, Panel Meters, LED Matrix Displays
- Package: 24-Pin SO Package
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Images are for illustration only; actual product may vary.