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AS1100_1

AS1100_1首页预览图
型号: AS1100_1
PDF文件:
  • AS1100_1 PDF文件
  • AS1100_1 PDF在线浏览
功能描述: Serially Interfaced, 8-Digit LED Driver
PDF文件大小: 396.27 Kbytes
PDF页数: 共17页
制造商: AMSCO[ams AG]
制造商LOGO: AMSCO[ams AG] LOGO
制造商网址: http://www.ams.com
捡单宝AS1100_1
PDF页面索引
120%
AS1100
Serially Interfaced, 8-Digit LED Driver
Data Sheet
www.austriamicrosystems.com Revision 1.33 1 - 17
1 General Description
The AS1100 is an LED driver for 7 segment numeric
displays of up to 8 digits. The AS1100 can be
programmed via a conventio nal 4 wire serial interface.
The device includes a BCD code-B decoder , a multiplex
scan circuitry, segment and display drivers, and a 64 Bit
memory. The memory is used to store the LED settings,
so that continuous reprogramming is no t 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 nume ric digits or to address each
segment directly.
The AS1100 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 AS1100 can be reset by
software and an external clock can be used. Several test
modes support easy debugging.
The AS1100 is offered in a 24-pin DIP and SOIC
packages.
2 Key Features
! 10MHz Serial Interface
! Individual LED Segment Contro l
! 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
! 24-pin DIP and SOIC Packages
3 Applications
The AS1100 is an ideal solution for Bar-Graph Displays,
Industrial Controllers, Panel Meters, LED Matrix
Displays and White Goods such as washin g machines
and dishwasher .
Figure 1. Typical Application Diagram – Single Cell to 3.3V Synchronous Boost Converter
8 Digits
8 Segments
GND
GND
CLK
LOAD
DIN
ISET
V
DD
DIFG0-DIG3
SEG A-G
SEP DP
MOSI
µP I/O
SCK
+5V
8-Digit µP Display
9.53k
19
18
1
12
1
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