mc9s12vr48 Freescale Semiconductor, Inc, mc9s12vr48 Datasheet - Page 87

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

1
2.3.41
Freescale Semiconductor
Address 0x0275
DDR1AD
Read: Anytime
Write: Anytime
Field
Reset
5-0
W
R
Data Direction Register 1 port AD —
This bit determines whether the associated pin is an input or output.
To use the digital input function the ADC Digital Input Enable Register (ATDDIEN) has to be set to logic level “1”.
1 Associated pin is configured as output
0 Associated pin is configured as input
Port AD Data Direction Register (DDR1AD)
0
0
7
Figure 2-40. Port AD Data Direction Register (DDR1AD)
0
0
6
Table 2-43. DDR1AD Register Field Descriptions
MC9S12VR Family Reference Manual, Rev. 2.2
Preliminary - Subject to Change Without Notice
DDR1AD5
5
0
DDR1AD4
0
4
Description
DDR1AD3
0
3
DDR1AD2
Port Integration Module (S12VRPIMV2)
0
2
DDR1AD1
Access: User read/write
0
1
DDR1AD0
0
0
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