AS1100PE-Z AMSCO [austriamicrosystems AG], AS1100PE-Z Datasheet

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AS1100PE-Z

Manufacturer Part Number
AS1100PE-Z
Description
Serially Interfaced, 8-Digit LED Driver
Manufacturer
AMSCO [austriamicrosystems AG]
Datasheet
Data Sheet AS1100
Serially Interfaced, 8-Digit LED Driver
AS1100
Key Features
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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 conventional 4 wire serial interface. It 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
not necessary.
1
MAX7219
Revision 1.32, Oct. 2004
Software Reset and external clock are not supported by
Pin Configuration
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
24-Pin DIP and SO Packages
Fully compatible to MAX7219
TOP
DIN
DIG0
DIG4
GND
DIG6
DIG2
DIG3
DIG7
GND
DIG5
DIG1
LOAD
1
10
12
11
1
2
3
4
5
6
7
8
9
DIP/SO 24
AS1100
19
18
17
16
15
14
13
24
23
22
21
20
DOUT
SEG D
SEG DP
SEG E
SEG C
VDD
ISET
SEG G
SEG B
SEG F
SEG A
CLK
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 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 fully compatible to the MAX 7219. AS1100 is
offered in a 24 pins PDIP and SOIC package.
Applications
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Typical Application Circuit
Bar-Graph Displays
Industrial Controllers
Panel Meters
LED Matrix Displays
White Goods
µP I/O
MOSI
9.53k
SCK
18
12
1
1
9
ISET
DIN
LOAD
CLK
GND GND
VDD
SEG A-G
SEP DP
DIG0-DIG7
+5V
4
19
8-Digit µP Display
8 Segments
8 Digits
DATA SHEET
Page 1 of 12

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AS1100PE-Z Summary of contents

Page 1

Data Sheet AS1100 Serially Interfaced, 8-Digit LED Driver AS1100 Key Features 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 ...

Page 2

Data Sheet AS1100 Absolute Maximum Ratings Voltage (with respect to GND) VDD DIN, CLK, LOAD All Other Pins Current DIG0–DIG7 Sink Current SEGA–G, DP Source Current Continuous Power Dissipation (TA = +85°C) Narrow Plastic DIP (derate 13.3mW/°C above +70°C Wide ...

Page 3

Data Sheet AS1100 Parameter Symbol Conditions Input Current DIN, CLK, LOAD I IH Logic High Input Voltage V Logic Low Input Voltage V Output High Voltage V Output Low Voltage V Hysteresis Voltage Timing Characteristics CLK Clock Period t CLK ...

Page 4

Data Sheet AS1100 LOAD CLK DIN D15 DOUT Figure 1: Timing diagram D15 D14 D13 D12 D11 D10 Address Table 1: Serial data format (16 bits) Detailed Description Serial-Addressing Modes Programming of ...

Page 5

Data Sheet AS1100 Decode-Mode Register In the AS1100 a BCD decoder is included. Every digit can be selected via register 09h to be decoded. The BCD code consists of the numbers 0-9, E,H, L,P and -. In register 09h a ...

Page 6

Data Sheet AS1100 Decode Mode decode for digits 7– Code B decode for digit decode for digits 7–1 Code B decode for digits 3– decode for digits 7–4 ...

Page 7

Data Sheet AS1100 Figure 2: Standard 7-segment LED Duty Cycle Hex Code 1/32 (min on 3/ ...

Page 8

Data Sheet AS1100 Display Test Register With the display test register 0Fh all LED can be tested. In the test mode all LEDs are switched on at maximum brightness (duty cycle 31/32). All programming of digit and control registers is ...

Page 9

Data Sheet AS1100 8x8 LED Dot Matrix Driver The example in Figure 3 uses the AS1100 to drive an 8x8 LED dot matrix. The LED columns have common cathode and are connected to the DIG0-7 outputs. The rows are connected ...

Page 10

Data Sheet AS1100 Computing Power Dissipation The upper limit for power dissipation (PD) for the AS1100 is determined from the following equation (VDD x 0.5mA) + (VDD - V )(DUTY x I LED where: VDD = supply voltage ...

Page 11

Data Sheet AS1100 Inches Millimeters Dim Min Max Min Max A --- 0.180 --- 4.572 A1 0.015 --- 0.380 --- A2 0.125 .0175 3.180 4.450 A3 0.055 0.080 1.400 2.030 B 0.015 0.022 0.381 0.560 B1 0.045 0.065 1.140 1.650 ...

Page 12

... Temp Range Pin Package AS1100PL 0°C to +70°C 24 Narrow Plastic DIP AS1100WL 0°C to +70°C 24 Wide SO Tubes AS1100PE -40°C to +85°C 24 Narrow Plastic DIP AS1100WE -40°C to +85°C 24 Wide SO Tubes AS1100WL-T 0°C to +70°C 24 Wide SO T&R AS1100WE-T -40°C to +85°C 24 Wide SO T&R For Pb-free package use suffix ‘ ...

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