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