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MAX7219 - 8-Digit LED Display Drivers

General Description

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.

Key Features

  • 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 for Lower EMI (MAX7221).
  • SPI, QSPI,.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Click here to ask about the production status of specific part numbers. MAX7219/MAX7221 Serially Interfaced, 8-Digit LED Display Drivers General Description 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 8x8 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.