mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 874

• Manufacturer Part Number: mc9s12xd256
• Description: Hcs12x Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 22 DP512 Port Integration Module (S12XDP512PIMV2)
22.3.2.63 Port AD0 Data Direction Register 1 (DDR1AD0)
Read: Anytime.
Write: Anytime.
This register configures pins PAD[07:00] as either input or output.
874
DDR1AD0[7:0]
Reset
Field
7–0
W
R
DDR1AD07
0
7
Data Direction Port AD0 Register 1
0 Associated pin is configured as input.
1 Associated pin is configured as output.
Note: Due to internal synchronization circuits, it can take up to 2 bus clock cycles until the correct value is
Note: To use the digital input function on port AD0 the ATD0 digital input enable register (ATD0DIEN) has to
read on PTAD01 register, when changing the DDR1AD0 register.
be set to logic level “1”.
DDR1AD06
Figure 22-65. Port AD0 Data Direction Register 1 (DDR1AD0)
0
6
Table 22-58. DDR1AD0 Field Descriptions
DDR1AD05
MC9S12XDP512 Data Sheet, Rev. 2.17
0
5
DDR1AD04
0
4
Description
DDR1AD03
0
3
DDR1AD02
0
2
DDR1AD01
Freescale Semiconductor
0
1
DDR1AD00
0
0