MC9S12XD256MAL Datasheet, PDF (828/1348 Pages) Freescale Semiconductor, Inc – Freescale’s Scalable Controller Area Network

Chapter 22 DP512 Port Integration Module (S12XDP512PIMV2)
22.3.2.5 Port C Data Register (PORTC)
R
W
Exp.:
Reset
7
PC7
DATA15
0
6
PC6
5
PC5
4
PC4
3
PC3
2
PC2
DATA14
DATA13
DATA12
DATA11
DATA10
0
0
0
0
0
Figure 22-7. Port C Data Register (PORTC)
1
PC1
DATA9
0
0
PC0
DATA8
0
Read: Anytime. In emulation modes, read operations will return the data from the external bus, in all other
modes the data source is depending on the data direction value.
Write: Anytime. In emulation modes, write operations will also be directed to the external bus.
Table 22-8. PORTC Field Descriptions
Field
7–0
PC[7:0]
Description
Port C — Port C pins 7–0 are associated with data I/O lines DATA15 through DATA8 respectively in expanded
modes. When this port is not used for external data, these pins can be used as general purpose I/O. If the data
direction bits of the associated I/O pins are set to logic level “1”, a read returns the value of the port register,
otherwise the buffered pin input state is read.
22.3.2.6 Port D Data Register (PORTD)
R
W
Exp.:
Reset
7
PD7
DATA7
0
6
PD6
5
PD5
4
PD4
3
PD3
2
PD2
DATA6
DATA5
DATA4
DATA3
DATA2
0
0
0
0
0
Figure 22-8. Port D Data Register (PORTD)
1
PD1
DATA1
0
0
PD0
DATA0
0
Read: Anytime. In emulation modes, read operations will return the data from the external bus, in all other
modes the data source is depending on the data direction value.
Write: Anytime. In emulation modes, write operations will also be directed to the external bus.
Table 22-9. PORTD Field Descriptions
Field
7–0
PD[7:0]
Description
Port D — Port D pins 7–0 are associated with data I/O lines DATA7 through DATA0 respectively in expanded
modes. When this port is not used for external data, these pins can be used as general purpose I/O. — If the
data direction bits of the associated I/O pins are set to logic level “1”, a read returns the value of the port register,
otherwise the buffered pin input state is read.
MC9S12XDP512 Data Sheet, Rev. 2.21
830
Freescale Semiconductor