ASR9 查看數據表（PDF） - austriamicrosystems AG
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ASR9 Datasheet PDF : 24 Pages
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AS1116
Datasheet - Pinout
4 Pinout
Pin Assignments
Figure 2. Pin Assignments (Top View)
ill valid AS1116
24 23 22 21 20 19
DIG2 1
18 SEG E
DIG3 2
17 SEGC
GND 3
DIG4 4
AS1116
16 VDD
15 SEGG
DIG5 5
14 SEGB
N/C 6
13 SEGF
7 8 9 10 11 12
AG t st Pin Descriptions
Table 1. Pin Descriptions
s n Pin Name QSOP-24
e SDI
1
m t DIG0:DIG7
a n GND
o LD
N/C
2-5, 7-10
6
11
12
c ISET
13
al SCL
ic SEGA:SEGG,
SEGDP
n VDD
Tech SDO
14
15-18,
20-23
19
24
-
TQFN(4x4)-24
22
1, 2, 4, 5, 7, 8, 23,
24
3
9
6
10
11
12-15,
17-20
16
Description
Serial-Data Input. Data is loaded into the internal 16-bit shift register on the rising edge
of pin SCL.
Digit Drive Lines. Eight digit drive lines that sink current from the display cathode.
Ground.
Load. Serial Data is loaded into the shift register while this pin is low. The last 16 bits of
serial data are latched on the rising edge of this pin.
Not Connected.
Set Segment Current. Connect to VDD or a reference voltage through RSET to set the
peak segment current (see Selecting RSET Resistor Value and Using
External Drivers on page 17).
Serial-Clock Input. 10MHz maximum rate. Data is shifted into the internal shift register
on the rising edge of this pin. Data is clocked out of pin SDO on the rising edge of this
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.
21
Exposed Pad
Serial-Data Output. The data into pin SDI is valid at pin SDO 16 clock cycles later. This
pin is used to daisy-chain several devices and is never high-impedance.
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/AS1116
Revision 1.08
2 - 23
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