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AS1115
Datasheet - P i n o u t
4 Pinout
Pin Assignments
Figure 2. Pin Assignments (Top View)
24 23 22 21 20 19
DIG2 1
DIG3 2
18 SEG E
17 SEGC
AS1115
GND 3
DIG4 4
DIG5 5
DIG6 6
AS1115
Exposed
Pad
16 VDD
15 SEGG
14 SEGB
13 SEGF
7
8
9
10 11 12
Pin Descriptions
Table 1. Pin Descriptions
Pin Name
SDA
QSOP-24
1
TQFN(4x4)-24
22
Description
Serial-Data I/O . Open drain digital I/O I2C data pin.
DIG0:DIG7
2-5, 7-10
1, 2, 4, 5, 6, 7, 23, Digit Drive Lines . Eight digit drive lines that sink current from the display common
24 cathode. Keyscan detection optional, but must be polled by the Prozessor.
GND
KEYA
KEYB
6
11
12
3
8
9
Ground .
Keyscan Input. Keyscan lines for key readback. Can be used for self-addressing.
Keyscan Input. Keyscan lines for key readback.
Set Segment Current . Connect to V DD or a reference voltage through R SET to set the
ISET
13
10
peak segment current (see Selecting RSET Resistor Value and Using External
Drivers on page 19 ).
SCL
IRQ
SEGA:SEGG,
SEGDP
VDD
14
24
15-18,
20-23
19
-
11
21
12-15, 17-20
16
Exposed Pad
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.
www.austriamicrosystems.com/LED-Driver-ICs/AS1115
Revision 1.08
2 - 25
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