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STAP16DPS05 датащи(PDF) 23 Page - STMicroelectronics

номер детали STAP16DPS05
подробное описание детали  Low voltage 16-bit constant current LED sink driver
PDF  34 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STAP16DPS05 датащи(HTML) 23 Page - STMicroelectronics

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STAP16DPS05
Detection mode functionality
34
Figure 19. Error detection sequence
Typical schematic used to perform the error detection:
Figure 20. Error detection typical schematic
IODEC can be measured as follows:
IODEC = (Vled-Vload) / Rload
Table 14 and Table 15 show respectively the IODEC average value at 3.3 V and 5.0 V.
The IODEC is the current value recognized by the device output open error detection.
LE/DM1 and OE/DM2
Key Sequence
necessary to Enter
in EDM
16 CLK pulse are required to
load the data setting 1 into
shift register
The LE/DM1 pulse
latch the data
loaded during the
previous state
During the error
detection are
necessary at least
2 CLK signal plus
oneat the end
Every CLK pulse shows the results of
single Output results:Out15;14; 13 etc. etc
After OE/DM2 signal turn High the
the device from
EDM to Normal
Mode
16 CLK pulse are required to
load the data setting 1 into
shift register
During the error
detection are
necessary at least
2 CLK signal plus
oneat the end
Every CLK pulse shows the results of
single Output results:Out15;14; 13 etc. etc
SDO pin show the results of
Error Detection (Open or
Short in this case)
The OE/DM2 Pulse put
the device from
EDM to Normal
Mode
AM13678v1
DUT
Vled
Rload
IDEC
Out
REXT
Iset
Vdd
GND



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