AS1115 austriamicrosystems AG, AS1115 Datasheet - Page 2

• Manufacturer Part Number: AS1115
• Description: Interfaced LED Driver
• Manufacturer: austriamicrosystems AG

Table 1. Pin Descriptions
AS1115
Datasheet - P i n o u t
4 Pinout
Pin Assignments
Figure 2. Pin Assignments (Top View)
Pin Descriptions
www.austriamicrosystems.com
SEGA:SEGG
DIG0:DIG7
, SEGDP
Name
KEYA
KEYB
GND
ISET
SDA
VDD
SCL
IRQ
Pin
QSOP-24 TQFN(4x4)-24
2-5, 7-10
15-18,
20-23
12
13
14
24
19
11
1
6
-
AS1115
1, 2, 4, 5, 6, 7,
Exposed Pad
12-15, 17-20
23, 24
22
10
21
16
11
3
8
9
Serial-Data I/O. Open drain digital I/O I²C data pin.
Digit Drive Lines. Eight digit drive lines that sink current from the display
common cathode. Keyscan detection optional, but must be polled by the
µProzessor.
Ground.
Keyscan Input. Keyscan lines for key readback. Can be used for self-
adressing.
Keyscan Input. Keyscan lines for key readback.
Set Segment Current. Connect to V
R
Value and Using External Drivers on page
Serial-Clock Input. 3.4MHz maximum rate.
Interupt Request Output. Open drain pin.
Seven Segment and Decimal Point Drive Lines. 8 seven-segment
drives and decimal point drive that source current to the display.
Positive Supply Voltage. Connect to +2.7 to +5.5V supply.
Exposed Pad. This pin also functions as a heat sink. Solder it to a large
pad or to the circuit-board ground plane to maximize power dissipation.
SET
to set the peak segment current (see
Revision 1.03
DIG2
DIG3
DIG4
DIG5
DIG6
GND
1
2
3
4
5
6
24
Description
7
23
8
AS1115
DD
22
9
or a reference voltage through
21
10
Exposed
19).
Pad
Selecting RSET Resistor
20
11
19
12
18
17
16
15
14
13
www.DataSheet4U.com
SEG E
SEGC
VDD
SEGG
SEGB
SEGF
2 - 24