MAX7219 IC-8-Digit LED Display Driver IC

MAX7219 IC-8-Digit LED Display Driver IC

The MAX7219/MAX7221 are compact, serial input/output common-cathode display drivers that interface microprocessors (µPs) to 7-segment numeric LED displays of up to 8 digits, bar-graph displays, or 64 individual LEDs. Included on-chip are a BCD code-B decoder, multiplex scan circuitry, segment and digit drivers and an 8×8 static RAM that stores each digit. Only one external resistor is required to set the segment current for all LEDs. The MAX7221 is compatible with SPI™, QSPI™, and MICROWIRE™, and has slew rate-limited segment drivers to reduce EMI. A convenient 4-wire serial interface connects to all common µPs. Individual digits may be addressed and updated without rewriting the entire display. The MAX7219/MAX7221 also allows the user to select code decoding or no-decode for each digit. The devices include a 150µA low-power shutdown mode, analog, and digital brightness control, a scan limit register that allows the user to display from 1 to 8 digits, and a test mode that forces all LEDs on.

Features/Specs:

• Operating Supply Voltage: 4~5.5V
• Operating Supply Current: 330mA
• Shutdown Supply Current: 150µA
• Display Scan Rate: 500~1300Hz
• Digit Drive Sink Current: 320mA
• Segment Drive Source Current: -2mA
• Segment Current Slew Rate: 10~50mA/µs
• Segment Drive Current Matching: 3%
• Segment Drive Sink Current: 5mA
• 10MHz Serial Interface
• Individual LED Segment Control
• Decode/No-Decode Digit Selection
• 150µA Low-Power Shutdown (Data Retained)
• Digital and Analog Brightness Control
• Display Blanked on Power-Up
• Drive Common-Cathode LED Display
• Slew-Rate Limited Segment Drivers
• Package: DIP24-Pin

Package Includes:

• 1 x MAX7219 IC-8-Digit LED Display Driver IC

Datasheet: MAX7219