收藏本站
AS1117
Datasheet - D e t a i l e d D e s c r i p t i o n
Display-Test Mode
The AS1117 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 15. Testmode Register Summary
D7
X
D6
RSET_short
D5
RSET_open
D4
LED_global
D3
LED_test
D2
LED_open
D1
LED_short
D0
DISP_test
Table 16. Testmode Register Bit Description (Address (HEX) = 0x0F))
Addr: 0x0F
Address
Bit
Bit Name
Default
Access
D7:D0
Optical display test. (Testmode for external visual test.)
D0
DISP_test
0
W
0: Normal operation; 1: Run display test (All digits are tested
independently from scan limit & shutdown register.)
D1
D2
D3
D4
D5
D6
D7
LED_short
LED_open
LED_test
LED_global
RSET_open
RSET_short
0
0
0
0
0
0
0
W
W
R
R
R
R
-
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 SET is open
0: R SET correct; 1: R SET is open
Checks if external resistor R SET is shorted
0: R SET correct; 1: R SET is shorted
Not used
LED Diagnostic Registers
These eight registers contain the result of the LED open/short test for the individual LED of each digit.
Table 17. LED Diagnostic Register Address
Register
Segment
Register
Segment
HEX
Address
Digit
D7
D6 D5 D4 D3 D2 D1 D0
HEX
Address
Digit
D7 D6 D5 D4 D3 D2 D1 D0
0x14
DIG0
0x18
DIG4
0x15
0x16
DIG1
DIG2
DP
A
B
C
D
E
F
G
0x19
0x1A
DIG5
DIG6
DP
A
B
C
D
E
F
G
0x17
DIG3
0x1B
DIG7
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 SET (see Selecting RSET Resistor Value and Using External Drivers on page 19 ). The intensity can be
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/AS1117
Revision 1.00
16 - 23
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
AS1118-BQFT IC DRIVER 64LED W/DELAY 24-TQFN
AS1121B-BQFT IC DRIVER 16-CH 32-TQFN
AS1122B-BQFT IC LED DVR 12-CH 24-TQFN
AS1123-BTST IC LED DVR 16-CH 40MA 24-QSOP
AS1390A-ZQFT IC BOOST CTLR/BUCK CONV 20-QFN
AS212-L SOCKET 12V AUTO SAFETY CAP MNT
AS212C AUTO 12V SOCKET W/SAFETY CAP
AS212 SOCKET AUTO LOCKING BLACK
相关代理商/技术参数
AS1117M1 制造商:ALPHA 制造商全称:ALPHA 功能描述:800mA Low Dropout Regulator SCSI-II Active Terminator
AS1117M1-X 制造商:ALPHA 制造商全称:ALPHA 功能描述:800mA Low Dropout Regulator SCSI-II Active Terminator
AS1117M3 制造商:ALPHA 制造商全称:ALPHA 功能描述:800mA Low Dropout Regulator SCSI-II Active Terminator
AS1117M3-1.5 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC
AS1117M3-2.5 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC
AS1117M3-3.0 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC
AS1117M3-3.3 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC
AS1117M3-5.0 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC