STP08CDC596 STMicroelectronics, STP08CDC596 Datasheet - Page 9

• Manufacturer Part Number: STP08CDC596
• Description: 8-BIT CONSTANT CURRENT LED SINK DRIVER WITH FULL OUTPUT DETECTION
• Manufacturer: STMicroelectronics

RUNNING THE DETECTION MODE
Phase One: “Entering In Detection Mode”
From the “Normal Mode” condition the device can
switch to the “Error Detection Mode” by a logic
Table 9: Entering In Detection Truth Table
Figure 13: Entering In Detection Timing Diagram
After these five CLK cycles the device goes into
the” Error Detection Mode” and at the 6
of CLK the SDI data are ready for the sampling.
Phase Two: “Error Detection”
The eight data bits must be set “1” in order to set
ON all the outputs during the detection. The data
are latched by LE/DM1 and after that the outputs
are ready for the detection process. When the
Figure 14: Detection Diagram
OE/DM2
LE/DM1
CLK
1°
H
L
th
rise front
2°
L
L
sequence on the OE/DM2 and LE/DM1 pins as
showed in the following Table and Diagram:
Micro controller switches the OE/DM2 to LOW, the
device drives the LEDs in order to analyze if an
OPEN or SHORT condition has occurred.
3°
H
L
4°
H
H
STP08CDC596
5°
H
L
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