STP08CDC596XTTR Просмотр технического описания (PDF) - STMicroelectronics

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STP08CDC596XTTR

8-Bit constant current Led sink driver with full outputs detection

STMicroelectronics 

STP08CDC596

Running the detection mode

9.2

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.

Table 10. Detection diagram

- Obsolettee PPrroodduucctt((ss)) The LEDs status will be detected at least in 2 microseconds and after this time the

) le microcontroller puts OE in HIGH state and the output data detection result will go to the

t(s o microprocessor via SDO.

c bs The detection data format is the same of data in normal mode. As soon as all the detection

OObbssoolleettee PPrroodduuct(s) - O data bits are available on the serial line, the device may go back to normal mode operation.

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