mc9s12xf512 Freescale Semiconductor, Inc, mc9s12xf512 Datasheet - Page 877

• Manufacturer Part Number: mc9s12xf512
• Description: S12x Microcontrollers 16-bit Automotive Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

1. Read: Anytime.
1. Read: Anytime.
19.3.47 Port P Data Direction Register (DDRP)
19.3.48 Port P Reduced Drive Register (RDRP)
Freescale Semiconductor
Address 0x025A
Address 0x025B
Write: Anytime.
Write: Anytime.
DDRP
DDRP
Field
Reset
Reset
7-6
5-0
W
W
R
R
Port P data direction—
This register controls the data direction of pins 7 through 6.
The PMF forces the I/O state to be an to be an input on the associated FAULT[1:0] pins if fault protection functions
are enabled. Refer to PMF Block Guide. In this case the data direction bit will not change.
1 Associated pin is configured as output.
0 Associated pin is configured as input.
Port P data direction—
This register controls the data direction of pins 5 through 0.
The PMF forces the I/O state to be an output for each pin associated with an enabled PW[05:00] channel. In this
case the data direction bit will not change. Refer to PMF Block Guide for details.
1 Associated pin is configured as output.
0 Associated pin is configured as input.
DDRP7
RDRP7
0
0
7
7
Due to internal synchronization circuits, it can take up to 2 bus clock cycles
until the correct value is read on PTP or PTIP registers, when changing the
DDRP register.
DDRP6
RDRP6
0
0
6
6
Figure 19-46. Port P Reduced Drive Register (RDRP)
Figure 19-45. Port P Data Direction Register (DDRP)
Table 19-42. DDRP Register Field Descriptions
MC9S12XF - Family Reference Manual, Rev.1.19
DDRP5
RDRP5
0
0
5
5
DDRP4
RDRP4
NOTE
0
0
4
4
Description
DDRP3
RDRP3
3
0
3
0
Chapter 19 Port Integration Module (S12XFPIMV2)
DDRP2
RDRP2
0
0
2
2
Access: User read/write
Access: User read/write
DDRP1
RDRP1
0
0
1
1
DDRP0
RDRP0
0
0
0
0
877
(1)
(1)