STP08DP05 STMicroelectronics, STP08DP05 Datasheet - Page 19

• Manufacturer Part Number: STP08DP05
• Description: Low-voltage 8-bit constant current LED sink with full outputs error detection
• Manufacturer: STMicroelectronics

Specifications of STP08DP05

• Output Current: 5-100mA

STP08DP05
10.2
Figure 18. Detection diagram
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 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.
The LEDs status will be detected at least in 1 microsecond and after this time the
microcontroller sets OE\DM2 in HIGH state and the output data detection result will go to
the microprocessor via SDO.
Detection mode and normal mode use both the same format data. As soon as all the
detection data bits are available on the serial line, the device may go back to normal mode
of operation. To re-detect the status the device must go back in normal mode and re-
entering in error detection mode.
Doc ID 13405 Rev 4
Detection mode functionality
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