Datasheet

Chapter 3 Port Integration Module (PIM9E128V1)
MC9S12E128 Data Sheet, Rev. 1.07
Freescale Semiconductor 133
3.3.1.5 Port AD Pull Device Enable Register (PERAD)
Read: Anytime. Write: Anytime.
This register configures whether a pull-up or a pull-down device is activated on configured input pins. If
a pin is configured as output, the corresponding Pull Device Enable Register bit has no effect.
76543210
R
PERAD15 PERAD14 PERAD13 PERAD12 PERAD11 PERAD10 PERAD9 PERAD8
W
Reset 0 0 0 00000
76543210
R
PERAD7 PERAD6 PERAD5 PERAD4 PERAD3 PERAD2 PERAD1 PERAD0
W
Reset 0 0 0 00000
Figure 3-6. Port AD Pull Device Enable Register (PERAD)
Table 3-5. PERAD Field Descriptions
Field Description
15:0
PERAD[15:0
]
Pull Device Enable Port AD
0 Pull-up or pull-down device is disabled.
1 Pull-up or pull-down device is enabled.