AS1105-WL ams

high performance needs great design. AS1105 Serially interfaced 4-digit LED driver datasheet Please be patient while we update our brand image as austriamicrosystems and TAOS are now ams. www.ams.com AS1105 Serially Interfaced, 4-Digit LED Driver 1 General Description 2 Key Features Cost effective version of AS1100 functionality for applications The AS1105 is an LED driver for 7-segment numeric displays of up up to 4-Digits to 4 digits. The AS1105 can be programmed via a conventional 4- wire serial interface. 10MHz Serial Interface The device includes a BCD code-B decoder, a multiplex scan Individual LED Segment Control circuitry, segment and display drivers, and a 32-bit memory. The Decode/No-Decode Digit Selection memory is used to store the LED settings, so that continuous reprogramming is not necessary. 20A Low-Power Shutdown (Data Retained) Every individual segment can be addressed and updated separately. Extremely low Operating Current 0.5mA in open loop Only one external resistor is required to set the current through the Digital and Analog Brightness Control LED display. Display Blanked on Power-Up Brightness can be controlled either in an analog or digital way. The user can choose the internal code-B decoder to display numeric Drive Common-Cathode LED Display digits or to address each segment directly. Software Reset The AS1105 features an extremely low shutdown current of only Optional External clock 20A and an operational current of less than 500A. The number of visible digits can be programmed as well. 20-pin SOIC Package The AS1105 can be reset by software and an external clock can be used. Several test modes support easy debugging. 3 Applications AS1105 is offered in a 20-pin SOIC package. The AS1105 is an ideal solution for Bar-Graph Displays, Industrial Controllers, Panel Meters, LED Matrix Displays and White Goods such as washing machines, dishwasher, etc. Figure 1. AS1105 - Typical Application Circuit +5V VDD 9.53k ISET DIFG0-DIG3 4 Digits DIN MOSI AS1105 LOAD P I/O SEG A-G SCK CLK SEP DP GND 8 Segments GND 4-Digit P Display www.ams.com/LED-Driver-ICs/AS1105 Revision 1.36 1 - 15