AS1115 DB-YELLOW austriamicrosystems, AS1115 DB-YELLOW Datasheet - Page 16

• Manufacturer Part Number: AS1115 DB-YELLOW
• Description: BOARD DEMO AS1115 YELLOW
• Manufacturer: austriamicrosystems

Specifications of AS1115 DB-YELLOW

• Current - Output / Channel: *
• Outputs And Type: 8, Non-Isolated
• Voltage - Output: *
• Features: 64 LED + 16 keys, I⊃2C
• Voltage - Input: 2.7 ~ 5.5 V
• Utilized Ic / Part: AS1115
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS compliant by exemption

Table 15. Testmode Register Bit Description (Address (HEX) = 0x0F))
AS1115
Datasheet - D e t a i l e d D e s c r i p t i o n
Display-Test Mode
The AS1115 can detect open or shorted LEDs. Readout of either open LEDs or short LEDs is possible, as well as a OR
relation of open and short.
Note: All settings of the digit- and control-registers are maintained.
Table 14. 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 16. LED Diagnostic Register Address
Note: If one or more short occures in the LED array, detection of individual LED fault could become ambiguous.
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/AS1115
Register
Address
0x14
0x15
0x16
0x17
D7
HEX
Bit
D0
D1
D2
D3
D4
D5
D6
D7
X
Addr: 0x0F
RSET_short
DIG0
DIG1
DIG2
DIG3
Digit D7 D6 D5 D4 D3 D2 D1 D0
RSET_open
RSET_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
RSET_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 1.07
G
SET
SET
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
SET
SET
D2
is open
is shorted
DP
SET
SET
D7:D0
A
is open
is shorted
LED_short
B
19). The intensity can be
D1
Segment
C
D
E
DISP_test
D0
F
16 - 24
G