The MAX7219 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 slewrate-limited segment drivers to reduce EMI.

Applications/Uses

• Bar Graph Displays
• Industrial Controllers
• LED Matrix Displays
• Panel Meters

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 SO Packages

The post MAX7219 IC, MAX7219CWG SO – Serially Interfaced, 8-Digit LED Display Drivers appeared first on Absolute Native Electronics.

MAX7219 Digital Tube Display Module

MAX7219 is a kind of integrated serial input/output common cathode display driver, it connects microprocessor and 8 digit 7 period of digital LED display, also can be connected to the bar graph display or 64 independent LED. It includes a piece of type B BCD coder, multiple scanning circuit, period of word drive, but also an 8 * 8 static RAM used to store every data. Only an external register used to set each LED segment current.

A convenient four wire serial interface can connection all general microprocessor. Each data can be addressed in the update don’t need rewriting all the display. MAX7219 also allows the user to each data selection coding or not to code.
The whole equipment includes A 150 μ A low power consumption closed mode, analog and digital brightness control, A scanning limit register allows users to display 1-8 bits of data, and A let all LED luminous detection model.

Only need three IO mouth can drive eight digital tube! Digital tube display when flicker free! Support cascade!

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