STP16DPP05 STMicroelectronics, STP16DPP05 Datasheet - Page 19

• Manufacturer Part Number: STP16DPP05
• Description: Low voltage 16-bit constant current LED sink driver with output error detection
• Manufacturer: STMicroelectronics

Specifications of STP16DPP05

• Output Current: 3 to 40 mA
• Esd Protection: 2 kV HBM, 200 V MM

STP16DPP05
7.2
Phase two: error detection
The 16 data bits must be set to “1” in order for all the outputs to be ON during error
detection. The data are latched by LE/DM1, after which the outputs are ready for the
detection process. When the microcontroller switches the OE/DM2 to LOW, the device
drives the LEDs to analyze if an OPEN or SHORT condition has occurred.
Figure 19. Detection diagram
The status of the LEDs is detected in at least 1 microsecond, and after this period the
microcontroller sets OE/DM2 to HIGH state and the output data detection result is sent to
the microcontroller via SDO.
Error detection mode and normal mode both use the same data format. As soon as all the
detection data bits are available on the serial line, the device may return to normal mode of
operation. To re-detect the status, the device must first return to normal mode and reenter
error detection mode.
Doc ID 16518 Rev 1
Error detection mode functionality
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