MAX7221CWG+ Maxim Original LED Display Drivers Serially Interfaced, 8-Digit, SOP24

Guide

MAX7219CNG

MAX7219CWG

MAX7219C/D

MAX7219ENG

MAX7219EWG

MAX7219ERG

Description

The MAX7221CWG+ is a compact, serial input/output common-cathode Display Driver that interface microprocessors (µPs) to 7-segment numeric LED displays of up to 8 digits. 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. Individual digits may be addressed and updated without rewriting the entire display. The MAX7221 also allow the user to select code-B decoding or no-decode for each digit.

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, MICROWIRE Serial Interface (MAX7221)
♦ 24-Pin DIP and SOP Packages

Application

Bar-Graph Displays

Industrial Controllers

Panel Meters

LED Matrix Displays

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