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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SC312XDP512F0MPVR датащи(PDF) 869 Page - Freescale Semiconductor, Inc |
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SC312XDP512F0MPVR датащи(HTML) 869 Page - Freescale Semiconductor, Inc |
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869 / 1348 page  Chapter 22 DP512 Port Integration Module (S12XDP512PIMV2) MC9S12XDP512 Data Sheet, Rev. 2.21 Freescale Semiconductor 871 22.3.2.57 Port J Reduced Drive Register (RDRJ) Read: Anytime. Write: Anytime. This register configures the drive strength of each port J output pin as either full or reduced. If the port is used as input this bit is ignored. 22.3.2.58 Port J Pull Device Enable Register (PERJ) 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 or as wired-OR output. This bit has no effect if the port is used as push-pull output. Out of reset a pull-up device is enabled. 76543210 R RDRJ7 RDRJ6 RDRJ5 RDRJ4 0 RDRJ2 RDRJ1 RDRJ0 W Reset 00000000 = Unimplemented or Reserved Figure 22-59. Port J Reduced Drive Register (RDRJ) Table 22-53. RDRJ Field Descriptions Field Description 7–0 RDRJ[7:4] RDRJ[2:0] Reduced Drive Port J 0 Full drive strength at output. 1 Associated pin drives at about 1/6 of the full drive strength. 76543210 R PERJ7 PERJ6 PERJ5 PERJ4 0 PERJ2 PERJ1 PERJ0 W Reset 11110111 = Unimplemented or Reserved Figure 22-60. Port J Pull Device Enable Register (PERJ) Table 22-54. PERJ Field Descriptions Field Description 7–0 PERJ[7:4] PERJ[2:0] Pull Device Enable Port J 0 Pull-up or pull-down device is disabled. 1 Either a pull-up or pull-down device is enabled. |
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