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AN3981 데이터시트(PDF) 31 Page - STMicroelectronics

부품명 AN3981
상세설명  LED array drivers
PDF  54 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3981 데이터시트(HTML) 31 Page - STMicroelectronics

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AN3981
STP24DP05
Doc ID 022217 Rev 1
31/54
For proper device operation, the entering sequence must be followed by a resuming
sequence as it is not possible to insert consecutive equal sequences.
Figure 36.
Example of error detection with the STP24DP05
Figure 36 shows an example of error detection where OUT15 and OUT0 are faulty, whereas
all other outputs are considered good.
4.6.3
Correctness of the error detection results
It is important to underline that the result of the diagnostic process must be compared with
the data loaded into the shift register.
In fact, if a channel is not switched on, the result of the detection is “0” anyway.
It is recommended to follow the approach shown in Figure 26.
Figure 34.
Digital key for entering error
detection mode in 32-bit LED
drivers
Figure 35.
Digital key for exiting error
detection mode in 32-bit LED
drivers



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