MAX6955AAX+

The MAX6955AAX+ is a 2-wire interfaced LED Display Driver with I/O expander and key scan. 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-compatible 2-wire serial interface. 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. The driver includes five I/O expander or general-purpose I/O (GPIO) lines, some or all of which can be configured as a key-switch reader. The key-switch reader automatically scans and debounces a matrix of up to 32 switches. Included on chip are full 14- and 16-segment ASCII 104-character fonts, a hexadecimal font for 7-segment displays, multiplex scan circuitry, anode and cathode drivers and static RAM that stores each digit. The maximum segment current for the display digits is set using a single external resistor.

• Simplifies driving 5 x 7 matrix LED displays
• Standard 2-wire interface supports a variety of microprocessor architectures
• Integrated flexibility supports different application requirements - Display blanked on power-up
• Slew-rate limited segment drivers for low EMI
• Automotive temperature range standard covers usage in harsh environments
• Audio/Video Equipment; Bar Graph Displays; Panel Meters; Set-Top Boxes; White Goods

Applications

RF Communications, Metering, Audio, Imaging, Video & Vision

Warnings

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party