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SC9S12XS64J1M Datasheet(PDF) 78 Page - Freescale Semiconductor, Inc |
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SC9S12XS64J1M Datasheet(HTML) 78 Page - Freescale Semiconductor, Inc |
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78 / 736 page  Port Integration Module (S12XSPIMV1) S12XS Family Reference Manual, Rev. 1.09 78 Freescale Semiconductor 2.3.11 Ports ABEK Reduced Drive Register (RDRIV) This register is used to select reduced drive for the pins associated with ports A, B, E, and K. If enabled, the pins drive at approx. 1/5 of the full drive strength. The reduced drive function is independent of which function is being used on a particular pin. 1 PUPBE Port B Pull-up Enable—Enable pull-up devices on all port input pins This bit configures whether a pull-up device is activated on all associated port input pins. If a pin is used as output this bit has no effect. 1 Pull-up device enabled 0 Pull-up device disabled 0 PUPAE Port A Pull-up Enable—Enable pull-up devices on all port input pins This bit configures whether a pull-up device is activated on all associated port input pins. If a pin is used as output this bit has no effect. 1 Pull-up device enabled 0 Pull-up device disabled Address 0x000D (PRR) Access: User read/write1 1 Read: Anytime. The data source depends on the data direction value. Write: Anytime. 76543210 R RDPK 00 RDPE 00 RDPB RDPA W Reset 00000000 = Unimplemented or Reserved Figure 2-9. Ports ABEK Reduced Drive Register (RDRIV) Table 2-10. PUCR Register Field Descriptions (continued) Field Description |
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