AS1116 DB-GREEN austriamicrosystems, AS1116 DB-GREEN Datasheet - Page 12
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AS1116 DB-GREEN
Manufacturer Part Number
AS1116 DB-GREEN
Description
BOARD DEMO AS1116 GREEN
Manufacturer
austriamicrosystems
Specifications of AS1116 DB-GREEN
Current - Output / Channel
*
Outputs And Type
8, Non-Isolated
Voltage - Output
*
Features
64 LED Driver with Error Detection, SPI
Voltage - Input
2.7 ~ 5.5 V
Utilized Ic / Part
AS1116
Lead Free Status / RoHS Status
Lead free by exemption / RoHS compliant by exemption
Table 14. Testmode Register Bit Description (Address (HEX) = 0x0F))
AS1116
Datasheet - D e t a i l e d D e s c r i p t i o n
Display-Test Mode
The AS1116 can detect open or shorted LEDs. Readout of either open LEDs (D2=1) or short LEDs (D1=1) is possible,
as well as a OR relation of open and short (D1=D2=1). After a dignostic run bit D4 can be read to clearify if an error
occurred before reading out detailed diagnostic data.
Note: All settings of the digit- and control-registers are maintained.
Table 13. Testmode Register Summary
LED Diagnostic Registers
These eight registers contain the result of the LED open/short test for the individual LED of each digit.
Table 15. LED Diagnostic Register Address
Note: If more than 2 shorts occure in the LED array, detection of individual LED fault could become limited to blocs.
Intensity Control Register (0x0A)
The brightness of the display can be controlled by digital means using the Intensity Control Registers and by analog
means using R
controlled globally for all digits, or for each digit individually. The global intensity command will write intensity data to all
four individual brightness registers, while the individual intesity command will only write to the associated individual
intensity register.
www.austriamicrosystems.com/LED-Driver-ICs/AS1116
Register
Address
0x14
0x15
0x16
0x17
D7
HEX
Bit
D0
D1
D2
D3
D4
D5
D6
D7
X
Addr: 0x0F
REXT_short
DIG0
DIG1
DIG2
DIG3
Digit D7 D6 D5 D4 D3 D2 D1 D0
REXT_open
REXT_short
SET
LED_global
D6
LED_short
LED_open
DISP_test
Bit Name
LED_test
(see
DP
Selecting RSET Resistor Value and Using External Drivers on page
A
REXT_open
B
D5
Default
Segment
C
0
0
0
0
0
0
0
0
D
LED_global
Access
E
D4
W
W
W
R
R
R
R
-
F
Optical display test. (Testmode for external visual test.)
0: Normal operation; 1: Run display test (All digits are tested
independently from scan limit & shutdown register.)
Starts a test for shorted LEDs. (Can be set together with D2)
0: Normal operation; 1: Activate testmode
Starts a test for open LEDs. (Can be set together with D1)
0: Normal operation; 1: Activate testmode
Indicates an ongoing open/short LED test
0: No ongoing LED test; 1: LED test in progress
Indicates that the last open/short LED test has detected an error
0: No error detected; 1: Error detected
Checks if external resistor R
0: R
Checks if external resistor R
0: R
Not used
Revision 1.05
G
EXT
EXT
LED_test
Register
Address
correct; 1: R
correct; 1: R
D3
0x1A
0x1B
0x18
0x19
HEX
Address
DIG4
DIG5
DIG6
DIG7
Digit D7 D6 D5 D4 D3 D2 D1 D0
LED_open
EXT
EXT
D2
is open
is shorted
DP
EXT
EXT
D7:D0
A
is open
is shorted
LED_short
B
15). The intensity can be
D1
Segment
C
D
E
DISP_test
D0
F
12 - 20
G