General Description

The AS1105 is an LED driver for 7 segment numeric displays of up to 4 digits. The AS1105 can be programmed via a conventional 4 wire serial interface. It includes a BCD code-B decoder, a multiplex scan circuitry, segment and display drivers and a 32 Bit memory. The memory is used to store the LED settings, so that continuous reprogramming is not necessary.

Key Features

- Cost effective version of AS1100 functionality forapplications up to 4-Digits

- 10MHz Serial Interface

- Individual LED Segment Control

- Decode/No-Decode Digit Selection

- 20µA Low-Power Shutdown (Data Retained)

- Extremely low Operating Current 0.5mA in open loop

- Digital and Analog Brightness Control

- Display Blanked on Power-Up

- Drive Common-Cathode LED Display

- Software Reset1

- Optional External clock

- 20 pin SO Packages

Applications

- Bar-Graph Displays

- Industrial Controllers

- Panel Meters

- LED Matrix Displays

- White Goods