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ST10F280 数据表(PDF) 86 Page - STMicroelectronics |
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ST10F280 数据表(HTML) 86 Page - STMicroelectronics |
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86 / 186 page  ST10F280 86/186 When the on-chip peripheral associated with a Port 3 pin is configured to use both the alternate input and output function, the descriptions above apply to the respective current operating mode. The direction must be set accordingly. Port 3 pins with alternate input/output functions are: MTSR, MRST, RxD0 and SCLK. Note: Enabling the CLKOUT function automatically enables the P3.15 output driver. Setting bit DP3.15=’1’ is not required. Figure 36 : Block Diagram of Port 3 Pin with Alternate Input or Alternate Output Function Open Drain Latch Write ODP3.y Read ODP3.y Direction Latch Write DP3.y Read DP3.y MUX 0 1 Alternate Data Input Input Latch P3.y Output Buffer y = 13, 11...0 Port Output Latch Read P3.y Write P3.y & Alternate Data Output Port Data Output CPU Clock |
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