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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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ST72324BJ2 데이터시트(PDF) 56 Page - STMicroelectronics |
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ST72324BJ2 데이터시트(HTML) 56 Page - STMicroelectronics |
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56 / 188 page  I/O ports ST72324B 56/188 Caution: The alternate function must not be activated as long as the pin is configured as input with interrupt, in order to avoid generating spurious interrupts. Table 28. I/O port configurations Hardware configuration 1. When the I/O port is in input configuration and the associated alternate function is enabled as an output, reading the DR register will read the alternate function output status. 2. When the I/O port is in output configuration and the associated alternate function is enabled as an input, the alternate function reads the pin status given by the DR register content. VDD RPU W R true open drain Not implemented in I/O ports Pad Pull-up condition DR register DR register access Data bus Alternate input External interrupt source (eix) Interrupt condition Analog input Pad RPU R/W VDD DR register access DR register true open drain Not implemented in I/O ports Data bus Alternate output Alternate enable Pad RPU DR R/W VDD true open drain Not implemented in I/O ports DR register access register Data bus Alternate enable Alternate output |
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