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SLG46535 Arkusz danych(PDF) 35 Page - Dialog Semiconductor |
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SLG46535 Arkusz danych(HTML) 35 Page - Dialog Semiconductor |
35 / 185 page SLG46535_DS_106 Page 34 of 184 SLG46535 7.0 I/O Pins The SLG46535 has a total of 11 multi-function I/O pins which can function as either a user defined Input or Output, as well as serving as a special function, or serving as a signal for programming of the on-chip Non Volatile Memory (NVM). Refer to Section 2.0 Pin Description for normal and programming modepin definitions. Normal Mode pin definitions are as follows: • Pin 1: VDD power supply • Pin 2: general purpose input • Pin 3: general purpose input or output • Pin 4: general purpose input or output or analog comparator 0(+) • Pin 5: general purpose input or output with OE or analog comparator 0(-) • Pin 6: general purpose input or OD output SCL • Pin 7: general purpose input or OD output SDA • Pin 8: general purpose input or output with OE or analog comparator 1(+) • Pin 9: ground • Pin 10: general purpose input or analog comparator 0/1/2(-) • Pin 11: VDD2 power supply • Pin 12: general purpose input or output with OE • Pin 13: general purpose input or output or external clock input for OSC0 25 kHz/2 MHz • Pin 14: general purpose input or output or external clock input for OSC1 25 MHz Programming Mode pin definitions are as follows: • Pin 1: VDD power supply • Pin 2: VPP programming voltage • Pin 6: Programming SCL • Pin 7: Programming SDA • Pin 9: ground • Pin 12: programming mode control Of the 12 user defined I/O pins on the SLG46535, all but one of the pins (Pin 2) can serve as both digital input and digital output. Pin 2 can only serve as a digital input pin. The high side of the user selectable push-pull or open-drain pin output structures for each GPIO is connected to either VDD or VDD2. This allows for the appropriate voltage level output compatible with each voltage domain. 7.1 Input Modes Each I/O pin can be configured as a digital input pin with/without buffered Schmitt Trigger, or can also be configured as a low voltage digital input. Pins 4, 5, 8 and10 can also be configured to serve as analog inputs to the on-chip comparators. 7.2 Output Modes Pins 3, 4, 5, 6, 7, 8, 10, 12, 13 and 14 can all be configured as digital output pins. 7.3 Pull Up/Down Resistors All I/O pins have the option for user selectable resistors connected to the input structure. The selectable values on these resistors are 10 k , 100 k and 1 M. In the case of Pin 2, the resistors are fixed to a pull-down configuration. In the case of all other I/O pins, the internal resistors can be configured as either pull-up or pull-downs. |
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