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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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ST7SCR Datenblatt(PDF) 31 Page - STMicroelectronics |
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ST7SCR Datenblatt(HTML) 31 Page - STMicroelectronics |
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31 / 102 page  ST7SCR 31/102 I/O PORTS (Cont’d) 9.3 I/O Port Implementation The hardware implementation on each I/O port de- pends on the settings in the DDR register and spe- cific feature of the I/O port such as true open drain. 9.3.1 Port A Table 9. Port A Description Figure 21. PA0, PA1, PA2, PA3, PA4, PA5 Configuration Figure 22. PA6 Configuration PORT A I / O Input Output PA[5:0] without pull-up * push-pull or open drain with software selectable pull-up PA6 without pull-up - *Reset State DR DDR LATCH LATCH DR SEL DDR SEL VDD PAD ALTERNATE ENABLE ALTERNATE ENABLE ALTERNATE ENABLE ALTERNATE ALTERNATE INPUT PULL-UP 1) OUTPUT P-BUFFER N-BUFFER 1 0 1 0 CMOS SCHMITT TRIGGER VSS VDD DIODES Note 1: selectable by PAPUCR register DR SEL PAD VDD DIODES CMOS SCHMITT TRIGGER 1 |
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