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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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PC912XDP512F0MPVR 데이터시트(PDF) 840 Page - Freescale Semiconductor, Inc |
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PC912XDP512F0MPVR 데이터시트(HTML) 840 Page - Freescale Semiconductor, Inc |
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840 / 1348 page  Chapter 22 DP512 Port Integration Module (S12XDP512PIMV2) MC9S12XDP512 Data Sheet, Rev. 2.21 842 Freescale Semiconductor 22.3.2.20 Port T Reduced Drive Register (RDRT) Read: Anytime. Write: Anytime. This register configures the drive strength of each port T output pin as either full or reduced. If the port is used as input this bit is ignored. 22.3.2.21 Port T Pull Device Enable Register (PERT) Read: Anytime. Write: Anytime. This register configures whether a pull-up or a pull-down device is activated, if the port is used as input. This bit has no effect if the port is used as output. Out of reset no pull device is enabled. 76543210 R RDRT7 RDRT6 RDRT5 RDRT4 RDRT3 RDRT2 RDRT1 RDRT0 W Reset 00000000 Figure 22-22. Port T Reduced Drive Register (RDRT) Table 22-24. RDRT Field Descriptions Field Description 7–0 RDRT[7:0] Reduced Drive Port T 0 Full drive strength at output. 1 Associated pin drives at about 1/6 of the full drive strength. 76543210 R PERT7 PERT6 PERT5 PERT4 PERT3 PERT2 PERT1 PERT0 W Reset 00000000 Figure 22-23. Port T Pull Device Enable Register (PERT) Table 22-25. PERT Field Descriptions Field Description 7–0 PERT[7:0] Pull Device Enable Port T 0 Pull-up or pull-down device is disabled. 1 Either a pull-up or pull-down device is enabled. |
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