Freescale Semiconductor Demonstration Board for Freescale MC9S12XHY256 Microcontroller DEMO9S12XHY256 DEMO9S12XHY256 Manual De Usuario
Los códigos de productos
DEMO9S12XHY256
Port Integration Module (S12XHYPIMV1)
MC9S12XHY-Family Reference Manual, Rev. 1.04
118
Freescale Semiconductor
2.3.48
Port H Input Register (PTIH)
2.3.49
Port H Data Direction Register (DDRH)
Address 0x0261
Access: User read
1
1
Read: Anytime.
Write:Never, writes to this register have no effect.
Write:Never, writes to this register have no effect.
7
6
5
4
3
2
1
0
R
PTIH7
PTIH6
PTIH5
PTIH4
PTIH3
PTIH2
PTIH1
PTIH0
W
Reset
u
u
u
u
u
u
u
u
= Unimplemented or Reserved
u = Unaffected by reset
Figure 2-45. Port H Input Register (PTIH)
Table 2-40. PTIH Register Field Descriptions
Field
Description
7-0
PTIH
Port H input data—
This register always reads back the buffered state of the associated pins. This can also be used to detect overload
or short circuit conditions on output pins.
This register always reads back the buffered state of the associated pins. This can also be used to detect overload
or short circuit conditions on output pins.
Address 0x0262
Access: User read/write
1
1
Read: Anytime.
Write: Anytime.
Write: Anytime.
7
6
5
4
3
2
1
0
R
DDRH7
DDRH6
DDRH5
DDRH4
DDRH3
DDRH2
DDRH1
DDRH0
W
Reset
0
0
0
0
0
0
0
0
Figure 2-46. Port H Data Direction Register (DDRH)