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AS3715 数据表(PDF) 66 Page - ams-OSRAM AG |
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AS3715 数据表(HTML) 66 Page - ams-OSRAM AG |
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66 / 159 page  ams Datasheet Page 65 [v1-03] 2015-Aug-10 Document Feedback AS3715 − Detailed Description – System Functions GPIO Pins Description The device contains 8 GPIO pins. Each of the pins can be configured as digital input, digital input (with pull-up or pull-down), ADC input (tri-state only for GPIO3,4,7 & 8), push-pull output (selectable lower or higher GPIO supply), or open drain output (with or without pull-up). When configured as output the output source can be a register bit, or the PWM generator. The polarity of the input and output signals can be inverted with the corresponding gpioX_invert bit, all further descriptions refer to normal (non-inverted) mode. GPIO7 & 8 have no special IO functionality, they just provide gpioX_in/out function. Figure 68: GPIO Functions GPIO Functions: Gives an overview which functions are available on which GPIOs. Function GPIO 1 2 3 4 5 6 7 8 Accessible via OTP during start-up x x x x Accessible during stand-by entry/leave x x x x Regulator ON/OFF control configurable in OTP x Regulator ON/OFF control configurable after start-up x x x IO special functions available x xxx xx ADC input function x x x x |
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