Chapter 2 Port Integration Module (S12ZVHYPIMV1)
S12ZVHY/S12ZVHL Family Reference Manual Rev. 1.05
Freescale Semiconductor
101
2.3.2.13
Data Direction Register
NOTE
Due to internal synchronization circuits, it can take up to two bus clock
cycles until the correct value is read on port data and port input registers,
when changing the data direction register.
The general-purpose data direction configuration can be overruled by an enabled peripheral function
shared on the same pin (
). If more then one peripheral function is available and enabled at the
same time, the highest ranked module according the predefined priority scheme in
will take
precedence on the pin.
Address 0x0224 DDRA
0x0225 DDRB
0x0244 DDRC
0x0245 DDRD
0x0264 DDRE
0x0265 DDRF
0x0285 DDRADL
0x02C2 DDRT
0x02D2 DDRS
0x02F2 DDRP
0x0302 DDRH
0x0312 DDRJ
0x0322 DDRG
0x0352 DDRU
Access: User read/write
(1)
1. Read: Anytime
Write: Anytime
7
6
5
4
3
2
1
0
R
DDRx7
DDRx6
DDRx5
DDRx4
DDRx3
DDRx2
DDRx1
DDRx0
W
Reset
0
0
0
0
0
0
0
0
Figure 2-15. Data Direction Register
Table 2-13. Data Direction Register Field Descriptions
Field
Description
7-0
DDRx
Data Direction
— Select general-purpose data direction
This bit determines whether the pin is a general-purpose input or output.
1 Associated pin is configured as output
0 Associated pin is configured as input
Содержание MC9S12ZVHL32
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Страница 686: ...Chapter 20 ECC Generation module SRAM_ECCV1 S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 686 Freescale Semiconductor...
Страница 752: ...Chapter 22 Supply Voltage Sensor BATSV2 S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 752 Freescale Semiconductor...
Страница 774: ...Chapter 23 LIN Physical Layer S12LINPHYV2 S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 774 Freescale Semiconductor...
Страница 788: ...Appendix A MCU Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 788 Freescale Semiconductor...
Страница 794: ...Appendix B ADC Electricals S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 794 Freescale Semiconductor...
Страница 798: ...Appendix D IRC Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 798 Freescale Semiconductor...
Страница 802: ...Appendix F MSCAN Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 802 Freescale Semiconductor...
Страница 806: ...Appendix G NVM Electrical Parameters S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 806 Freescale Semiconductor...
Страница 810: ...Appendix H BATS Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 810 Freescale Semiconductor...
Страница 816: ...Appendix K OSC32K Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 816 Freescale Semiconductor...
Страница 822: ...Appendix L SPI Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 822 Freescale Semiconductor...
Страница 826: ...Appendix M LINPHY Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 826 Freescale Semiconductor...
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