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MAX7221 Datasheet Serially Interfaced / 8-Digit LED Display Drivers

Manufacturer: Maxim Integrated (now Analog Devices)

Download the MAX7221 datasheet PDF. This datasheet also includes the MAX variant, as both parts are published together in a single manufacturer document.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (MAX-7219.pdf) that lists specifications for multiple related part numbers.

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.

Overview

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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,.

More Datasheets from Maxim Integrated (now Analog Devices)

Part Number Description
MAX722 PALMTOP COMPUTER AND LCD POWER SUPPLY REGULATORS
MAX723 PALMTOP COMPUTER AND LCD POWER SUPPLY REGULATORS
MAX7231 Triplexed LCD Decoder/Drivers
MAX7232 Triplexed LCD Decoder/Drivers
MAX7233 Triplexed LCD Decoder/Drivers
MAX7234 Triplexed LCD Decoder/Drivers
MAX724 5A/2A Step-Down / PWM / Switch-Mode DC-DC Regulators
MAX726 5V/3.3V/3V 5A Step-Down / PWM / Switch-Mode DC-DC Regulators
MAX727 5V/3.3V/3V 5A Step-Down / PWM / Switch-Mode DC-DC Regulators
MAX728 5V/3.3V/3V 5A Step-Down / PWM / Switch-Mode DC-DC Regulators