mc9s12vr48 Freescale Semiconductor, Inc, mc9s12vr48 Datasheet - Page 64

• Manufacturer Part Number: mc9s12vr48
• Description: S12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

1
1
Port Integration Module (S12VRPIMV2)
2.3.13
2.3.14
64
Address 0x0244
Address 0x0245
Read: Anytime
Write: Anytime
Read: Anytime
Write: Anytime
PERT
PPST
Field
Field
Reset
Reset
3-0
3-0
W
W
R
R
Pull device Enable Register port T — 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.
1 Pull device enabled
0 Pull device disabled
Pull device Polarity Select register port T — Configure pull device polarity on input pin
This bit selects a pullup or a pulldown device if enabled on the associated port input pin.
1 A pulldown device is selected
0 A pullup device is selected
Port T Pull Device Enable Register (PERT)
Port T Polarity Select Register (PPST)
0
0
0
0
7
7
Figure 2-11. Port T Pull Device Enable Register (PERT)
0
0
0
0
6
6
Figure 2-12. Port T Polarity Select Register (PPST)
Table 2-13. PERT Register Field Descriptions
Table 2-14. PPST Register Field Descriptions
MC9S12VR Family Reference Manual,
Preliminary - Subject to Change Without Notice
5
0
0
5
0
0
0
0
0
0
4
4
Description
Description
PERT3
PPST3
0
0
3
3
Rev. 2.2
PERT2
PPST2
0
0
2
2
Freescale Semiconductor
PERT1
PPST1
Access: User read/write
Access: User read/write
0
0
1
1
PERT0
PPST0
0
0
0
0
1
1