AS1105 Datasheet | AMSCO

.. Data Sheet AS1105 Serially Interfaced, 4-Digit LED Driver AS1105 Key Features - DATA SHEET Cost effective version of AS1100 functionality for applications 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 mon-Cathode LED Display Software Reset 1 Optional External clock 20 pin SO Packages Every individual segment can be addressed and updated separately. Only one external resistor is required to set the current through the LED display. Brightness can be controlled either in an analog or digital way. The user can choose the internal code-B decoder to display numeric digits or to address each segment directly. The AS1105 Features an extremely low shutdown current of only 20µA. and an operational current of less than 500µA. The number of visible digits can be programmed as well. The AS1105 can be reset by software and an external clock can be used. Several test modes support easy debugging. AS1105 is offered in a 20 SOIC package. Applications - 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. Bar-Graph Displays Industrial Controllers Panel Meters LED Matrix Displays White Goods DataShee TOP DOUT 1 DIN 2 20 SEG D 19 SEG DP 18 SEG E 17 SEG C 16 VDD 15 ISET +5V 9.53k ISET MOSI µP I/O SCK...