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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STAP16DPPS05XTTR датащи(PDF) 21 Page - STMicroelectronics |
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STAP16DPPS05XTTR датащи(HTML) 21 Page - STMicroelectronics |
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21 / 33 page  DocID024306 Rev 6 21/33 STAP16DPPS05 Error detection mode functionality 33 7.2 Phase two: error detection The 16 data bits must be set to “1” in order to set ON all the outputs during detection. The data are latched by LE/DM1 and after that the outputs are ready for the detection process. When the microcontroller switches the OE/DM2 to LOW, the device drives the LEDs in order to analyze if an OPEN or SHORT condition has occurred. The LED status is detected in 1 microsecond (minimum) and after this time the microcontroller sets OE/DM2 in HIGH state and the output data detection results go to the microprocessor via SDO. 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 go back to normal mode of operation. To re-detect the status, the device must go back in normal mode and re-enter error detection mode. Figure 19. Detection diagram |
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