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ST72344K2 Datasheet(PDF) 76 Page - STMicroelectronics |
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ST72344K2 Datasheet(HTML) 76 Page - STMicroelectronics |
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76 / 247 page  I/O ports ST72344xx, ST2345xx 76/247 Doc ID 12321 Rev 6 Figure 35. I/O port general block diagram Table 27. I/O Port mode options(1) 1. NI = not implemented, Off = implemented not activated, On = implemented and activated. Configuration mode Pull-up P-Buffer Diodes to VDD to VSS Input Floating with/without Interrupt Off Off On On Pull-up with/without Interrupt On Output Push-pull Off On Open drain (logic level) Off True open drain NI NI NI(2) 2. The diode to VDD is not implemented in the true open drain pads. A local protection between the pad and VSS is implemented to protect the device against positive stress. DR DDR OR PAD VDD ALTERNATE ENABLE ALTERNATE OUTPUT 1 0 OR SEL DDR SEL DR SEL PULL-UP CONDITION P-BUFFER (see table below) N-BUFFER PULL-UP (see table below) 1 0 ANALOG INPUT If implemented ALTERNATE INPUT VDD DIODES (see table below) EXTERNAL SOURCE (eix) INTERRUPT CMOS SCHMITT TRIGGER REGISTER ACCESS |
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