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WM8321 数据表(PDF) 23 Page - Wolfson Microelectronics plc |
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WM8321 数据表(HTML) 23 Page - Wolfson Microelectronics plc |
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23 / 253 page  Production Data WM8321 w PD, February 2012, Rev 4.0 23 7.5 GENERAL PURPOSE INPUTS / OUTPUTS (GPIO) Unless otherwise noted: TJ = -40°C to +125°C; Typical values are at TJ = +25ºC PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT GPIO1, GPIO2, GPIO3, GPIO7, GPIO8, GPIO9 Input HIGH Level VIH 0.75 x VDD V Input LOW Level VIL 0.25 x VDD V Output HIGH Level VOH IOH = 1mA 0.8 x VDD V Output LOW Level VOL IOL = -1mA 0.2 x VDD V Pull-up resistance to VDD RPU GPn_PWR_DOM=0 and DBVDD=1.8V or GPn_PWR_DOM=1 180 kΩ Pull-down resistance RPD 180 kΩ GPIO4, GPIO5, GPIO6, GPIO10, GPIO11, GPIO12 Input HIGH Level VIH 0.85 x VDD V Input LOW Level VIL 0.2 x VDD V Output HIGH Level VOH IOH = 1mA 0.75 x VDD V Output LOW Level VOL IOL = -1mA 0.2 x VDD V Pull-up resistance to VDD RPU GPn_PWR_DOM=0 and DBVDD=1.8V or GPn_PWR_DOM=1 and PVDD=3.8V 180 kΩ Pull-down resistance RPD 180 kΩ Notes: 1. ‘VDD’ is the voltage of the applicable power domain for each pin (selected by the corresponding GPn_PWR_DOM register). 2. Pull-up / pull-down resistance only applies when enabled using the GPn_PULL registers. 3. Pull-up / pull-down resistors are disabled when the GPIO pin is tri-stated. 4. Pull-up / pull-down resistance may change with the applicable power domain (as selected by GPn_PWR_DOM). |
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