Advertisement

Article

Serial interface 8-digit driver ideal for bar-graph displays, industrial controllers, and LED matrix display

Raleigh, NC May 06, 2004 — austriamicrosystems has launched the AS1100, an LED driver for seven segment numeric displays of up to eight digits. Featuring an extremely low shutdown current of only 50μA (maximum), and an operating current of less than 500μA (maximum), the AS1100 offers significant improvements over its closest competitor in the market, which offers a shut down current of 150μA and operating current of 8mA.

The AS1100 can be programmed via a conventional four-wire 10MHz serial interface. It features both analog and digital brightness control, includes a BCD code-B decoder, multiplex scan circuitry, segment and display drivers and a 64-bit memory, which is used to store the LED settings so that continuous reprogramming is not necessary.

“Each individual segment can be addressed and updated separately,” said Walter Moshammer, Marketing Director of austriamicrosystems' communications business unit. “In addition, only one external resistor is required to set the current through the LED display.”

The driver features both digital and analog brightness control and design engineers can choose the internal code-B decoder to display numeric digits or to address each segment directly. The number of visible digits can be programmed, it can be reset by software and an external clock can be used. Several test modes are available to support easy debugging.

Pin compatible with Maxim's MAX7219, the AS1100 is available immediately in 24-pin PDIP and SOIC packaging. Demo boards are available now.

AS1100 data sheet

austriamicrosystems, 8601 Six Forks Rd., Suite 400, Raleigh, NC 27615. Tel: 919-676-5292.

0 comments on “Serial interface 8-digit driver ideal for bar-graph displays, industrial controllers, and LED matrix display

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.