Datasheet > AS1105_1

AS1105_1

更新时间： 2022-12-27 17:49:41

品牌	Logo	应用领域
艾迈斯 - AMSCO		驱动器
页数	文件大小	规格书
15页	554K
描述
Serially Interfaced, 4-Digit LED Driver

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AS1105_1 数据手册

Data Sheet

AS1105

Serially Interfaced, 4-Digit LED Driver

1 General Description

2 Key Features

ꢀ

Cost effective version of AS1100 functionality for

applications up to 4-Digits

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.

ꢀ

10MHz 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.

Individual LED Segment Control

Decode/No-Decode Digit Selection

20µA Low-Power Shutdown (Data Retained)

Extremely low Operating Current 0.5mA in open

loop

Every individual segment can be addressed and

updated separately. Only one external resistor is

required to set the current through the LED display.

ꢀ

Digital and Analog Brightness Control

Display Blanked on Power-Up

Drive Common-Cathode LED Display

Software Reset

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.

Optional External clock

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.

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.

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. Typical Application Circuit

+5V

V^DD

9.53k

DIFG0-DIG3

ISET

4 Digits

MOSI

µP I/O

SCK

DIN

LOAD

SEG A-G

SEP DP

CLK

GND

8 Segments

GND

4-Digit µP Display

www.austriamicrosystems.com

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