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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STMPE811 датащи(PDF) 51 Page - STMicroelectronics |
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STMPE811 датащи(HTML) 51 Page - STMicroelectronics |
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51 / 64 page  STMPE811 GPIO controller Doc ID 14489 Rev 2 51/64 GPIO_ED_STA GPIO edge detect status Address: 0x14 Type: R/W Reset: 0x00 Description: GPIO edge detect status register. An edge transition has been detected. GPIO_RE Rising edge register Address: 0x15 Type: R/W Reset: 0x00 Description: GPIO rising edge detection enable register. Setting this bit to ‘1’ would enable the detection of the rising edge transition. The detection would be reflected in the GPIO edge detect status register. GPIO_FE Falling edge detection enable register Address: 0x16 Type: R/W Reset: 0x00 Description: Setting this bit to ‘1’ would enable the detection of the falling edge transition. The detection would be reflected in the GPIO edge detect status register. GPIO_ALT_FUNCT Alternate function register Address: 0x17 Type: R/W Reset: 0x0F Description: Alternate function register. "‘0’ sets the corresponding pin to function as touch screen/ADC, and ‘1’ sets it into GPIO mode. 13.0.1 Power supply The STMPE811 GPIO operates from a separate supply pin (VIO). This dedicated supply pin provides a level-shifting feature to the STMPE811. The GPIO remains valid until VIO is removed. The host system may choose to turn off Vcc supply while keeping VIO supplied. However it is not allowed to turn off supply to VIO, while keeping the Vcc supplied. The touch screen is always powered by VIO. For better resolution and noise immunity, VIO above 2.8 V is advised. |
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