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
Freescale Semiconductor
109
2.3.34
PIM Reserved Registers
2.3.35
Port M Pull Device Enable Register (PERM)
Address 0x0253
Access: User read/write
1
1
Read: Anytime
Write: Anytime
Write: Anytime
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
Figure 2-31. PIM Reserved Register
Address 0x0254
Access: User read/write
1
1
Read: Anytime
Write: Anytime
Write: Anytime
7
6
5
4
3
2
1
0
R
0
0
0
0
PERM3
PERM2
PERM1
PERM0
W
Reset
0
0
0
0
1
1
1
1
= Unimplemented or Reserved
Figure 2-32. Port M Pull Device Enable Register (PERM)
Table 2-28. PERT Register Field Descriptions
Field
Description
3-0
PERM
Port M pull device enable—Enable pull device on input pin
This bit controls whether a pull device on the associated port input pin is active. If a pin is used as output this bit has
no effect. The polarity is selected by the related polarity select register bit.
This bit controls whether a pull device on the associated port input pin is active. If a pin is used as output this bit has
no effect. The polarity is selected by the related polarity select register bit.
1 Pull device enabled
0 Pull device disabled
0 Pull device disabled