AS1105WL austriamicrosystems, AS1105WL Datasheet - Page 2

• Manufacturer Part Number: AS1105WL
• Description: IC LED 4-DIGIT DRIVER 20-SOIC
• Manufacturer: austriamicrosystems

Specifications of AS1105WL

• Display Type: LED
• Configuration: 7 Segment + DP
• Interface: Serial
• Digits Or Characters: 4 Digits
• Current - Supply: 330mA
• Voltage - Supply: 4 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (0.300", 7.50mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AS1105
Data Sheet - P i n A s s i g n m e n t s
4 Pin Assignments
Figure 2. Pin Configuration (Top View)
Pin Descriptions
www.austriamicrosystems.com
Table 1. Pin Descriptions
SEG A–G, DP
DIG0–DIG3
DOUT
Name
LOAD
GND
ISET
CLK
DIN
V
Pin
DD
11–14, 17–20
Pin Number
3,8,5,6
4,7
10
15
16
1
2
9
DOUT
LOAD
DIG0
DIG2
DIG3
DIG1
GND
GND
CLK
DIN
Serial data output for cascading drivers. The output is valid after 16.5
clock cycles. The output is never set to high impedance.
Data input. Data is programmed into the 16-bit shift register on the rising
CLK edge.
4-digit driver lines that sink the current from the common cathode of the
display. In shutdown mode the AS1105 switches the outputs to V
Both GND pins must be connected.
Strobe input. With the rising edge of the LOAD signal the 16-bit of serial
data is latched into the register.
Clock input. The interface is capable to support clock frequencies up to
10MHz. The serial data is clocked into the internal shift register with the
rising edge of the CLK signal. On the DOUT pin the data is applied with the
falling edge of CLK.
Seven segment driver lines including the decimal point. When a
segment is turned off the output is connected to GND.
The current into I
therefore the brightness.
Positive Supply Voltage (+5V)
10
1
2
3
4
5
6
7
8
9
AS1105
Revision 1.34
SO
SET
determines the peak current through the segments and
19
18
17
16
13
11
20
15
14
12
SEG D
SEG DP
SEG E
SEG C
V
I
SEG G
SEG B
SEG F
SEG A
SET
DD
Description
DD
.
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