AS1110 AMSCO [austriamicrosystems AG], AS1110 Datasheet - Page 16

• Manufacturer Part Number: AS1110
• Description: Constant-Current, 16-Channel LED Driver with Diagnostics
• Manufacturer: AMSCO [austriamicrosystems AG]

AS1110
Data Sheet - D e t a i l e d D e s c r i p t i o n
On the next falling edge of OEN, current is reduced to I
ately increase to normal levels and the detailed error report can be read out entering error-detection mode.
Figure 16. Switching into Low-Current Diagnostic Mode Timing Diagram
Shutdown Mode
The AS1110 features a shutdown mode which can be entered via 4 clock pulses during error-detection mode. To
enable the shutdown mode a 0 must be placed at SDI after the rising edge of the 3rd clock pulse.
To disable shutdown mode a 1 must be placed at SDI after the 3rd clock pulse. The shutdown/wakeup information will
be latched through if multiple AS1110 devices are in a chain. At the rising edge of the 4th clock pulse the shutdown bit
will be read out and the AS1110 will shutdown or wakeup.
Note: In shutdown mode the supply current drops down to <10µA.
Figure 17. Shutdown Mode Timing Diagram
www.austriamicrosystems.com
For detailed timing information see
OEN
SDO
CLK
SDI
LD
t
SU(ERROR)
OEN
SDO
CLK
SDI
LD
Timing Diagrams on page
t
GSW(ERROR)
T
t
FLAG
P4
t
T
SU(ERROR)
t
GSW(ERROR)
t
FLAG
t
P1
SW(ERROR)
O
FLAG
S
9.
FLAG
O
Revision 1.00
FLAG
LC
. With the next rising edge of OEN the current will immedi-
Load Internal all 1s
Don’t
Test Pattern
Care
(optional)
S
FLAG
t
1 = Wakeup
0 = Shutdown
1 = Wakeup
0 = Shutdown
SU(D)
t
H(L)
Diagnosis Mode
Low-Current
Re-entering Error
Detection Mode
(see Figure 14)
(see Figure 15)
Normal Operation Current
t
TESTING
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