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AS1105

ams
Part Number AS1105
Manufacturer ams
Description Serially interfaced 4-digit LED driver
Published Mar 4, 2015
Detailed Description high performance needs great design. AS1105 Serially interfaced 4-digit LED driver datasheet Please be patient while we ...
Datasheet PDF File AS1105 PDF File

AS1105
AS1105

Overview
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 The AS1105 is an LED driver for 7-segment numeric displays of up to 4 digits.
The AS1105 can be programmed via a conventional 4wire serial interface.
The device 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.
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-pin SOIC package.
Figure 1.
AS1105 - Typical Application Circuit 2 Key Features 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 Common-Cathode LED Display Software Reset Optional External clock 20-pin SOIC Package 3 Applications 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.
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53k MOSI µP I/O ...


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