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
148
Freescale Semiconductor
2.3.92
PIM Reserved Registers
2.3.93
Port V Pull Device Enable Register (PERV)
2.3.94
Port V Polarity Select Register (PPSV)
Address 0x029B
Access: User read
1
1
Read: Always reads 0x00
Write: Unimplemented
Write: Unimplemented
7
6
5
4
3
2
1
0
R
0
0
0
0
0
0
0
0
W
Reset
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
u = Unaffected by reset
Figure 2-89. PIM Reserved Registers
Address 0x029C
Access: User read/write
1
1
Read: Anytime.
Write: Anytime.
Write: Anytime.
7
6
5
4
3
2
1
0
R
PERV7
PERV6
PERV5
PERV4
PERV3
PERV2
PERV1
PERV0
W
Reset
0
0
0
0
0
0
0
0
Figure 2-90. Port V Pull Device Enable Register (PERV)
Table 2-76. PERV Register Field Descriptions
Field
Description
7-0
PERV
Port V pull device enable—Enable pull devices on input pins
These bits configure whether a pull device is activated, if the associated pin is used as an input. This bit has no effect
if the pin is used as an output. Out of reset no pull device is enabled.
These bits configure whether a pull device is activated, if the associated pin is used as an input. This bit has no effect
if the pin is used as an output. Out of reset no pull device is enabled.
1 Pull device enabled.
0 Pull device disabled.
0 Pull device disabled.
Address 0x029D
Access: User read/write
1
7
6
5
4
3
2
1
0
R
PPSV7
PPSV6
PPSV5
PPSV4
PPSV3
PPSV2
PPSV1
PPSV0
W
Reset
0
0
0
0
0
0
0
0
Figure 2-91. Port V Polarity Select Register (PPSV)