Alphanumeric Led Display Driver Ic

The mm5450 and mm5451 led display drivers are monolithic mos ic s fabricated in an n channel metal gate process.

Alphanumeric led display driver ic. Pic software hitech picc compiler written in vhdl source code are in addition palce16v8. The other answers give great suggestions but to add to them you could consider the max7219 driver chip. This application note shows a typical application and configuration for driving eight mono color 14 segment leds. I have a page about using it.

There are dedicated ic s for this purpose however a micro controller can be programmed to perform this task. The technology produces low threshold enhancement mode and ion implanted depletion mode devices. A single pin controls the led display brightness by setting a reference current through a variable resistor connected to the supply. The max6955 is a compact display driver that interfaces microprocessors to a mix of 7 segment 14 segment and 16 segment led displays through an i 2 c compatible 2 wire serial interface.

The max6955 is an led display driver with an i 2 c compatible serial interface capable of supporting fast mode speeds up to 400khz. General description the max6955 is a compact display driver that interfaces microprocessors to a mix of 7 segment 14 segment and 16 segment led displays through an i2c compati ble 2 wire serial interface. The max6954 is a versatile display driver capable of controlling a mix of discrete 7 segment 14 segment and 16 segment led displays through a serial interface. This application note describes a 14 segment application circuit and an example program that continuously scrolls the message.

In this post i ll show how a single alphanumeric display can be driven by pic16f877a micro controller. It can drive a 8x8 pixel display like one alphanumeric character or 8 x 7 segments displays a 7 segment display usually has a decimal place so that is really an 8 led display. Normally numeric leds and alphanumeric leds have 8 to 18 pins that need to be connected to power current limiting resistors a transistor if multiplexed and a display driver chip. By using a microcontroller you ll get a more flexible design not limiting the characters being displayed or additional functionality that can be easily added by modifying the code.

Example of 64 pixel display. The max6955 drives up to 16 digits 7 segment 8 digits 14 segment 8 digits 16 segment or 128 discrete leds while functioning from a supply voltage as low as 2 7v.