Datasheet

Chapter 2 Port Integration Module (S12XEPIMV1)
MC9S12XE-Family Reference Manual Rev. 1.25
Freescale Semiconductor 155
2.3.69 Port AD0 Data Register 0 (PT0AD0)
2.3.70 Port AD0 Data Register 1 (PT1AD0)
Address 0x0270 Access: User read/write
(1)
1. Read: Anytime.
Write: Anytime.
76543210
R
PT0AD07 PT0AD06 PT0AD05 PT0AD04 PT0AD03 PT0AD02 PT0AD01 PT0AD00
W
Altern.
Function
AN15 AN14 AN13 AN12 AN11 AN10 AN9 AN8
Reset 00000000
Figure 2-67. Port AD0 Data Register 0 (PT0AD0)
Table 2-65. PT0AD0 Register Field Descriptions
Field Description
7-0
PT0AD0
Port AD0 general purpose input/output data—Data Register
This register is associated with ATD0 analog inputs AN[15:8] on PAD[15:8], respectively.
When not used with the alternative function, this pin can be used as general purpose I/O.
If the associated data direction bits of these pins are set to 1, a read returns the value of the port register, otherwise
the buffered pin input state is read.
Address 0x0271 Access: User read/write
(1)
1. Read: Anytime.
Write: Anytime.
76543210
R
PT1AD07 PT1AD06 PT1AD05 PT1AD04 PT1AD03 PT1AD02 PT1AD01 PT1AD00
W
Altern.
Function
AN7 AN6 AN5 AN4 AN3 AN2 AN1 AN0
Reset 00000000
Figure 2-68. Port AD0 Data Register 1 (PT1AD0)
Table 2-66. PT1AD0 Register Field Descriptions
Field Description
7-0
PT1AD0
Port AD0 general purpose input/output data—Data Register
This register is associated with ATD0 analog inputs AN[7:0] on PAD[7:0], respectively.
When not used with the alternative function, these pins can be used as general purpose I/O.
If the associated data direction bits of these pins are set to 1, a read returns the value of the port register, otherwise
the buffered pin input state is read.