mc9s12hz256v2 Freescale Semiconductor, Inc, mc9s12hz256v2 Datasheet - Page 127
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mc9s12hz256v2
Manufacturer Part Number
mc9s12hz256v2
Description
Hcs12 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC9S12HZ256V2.pdf
(692 pages)
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4.3.1.4
Read: Anytime. Write: Anytime.
This register configures the drive strength of configured output pins as either full or reduced. If a pin is
configured as input, the corresponding Reduced Drive Register bit has no effect.
4.3.1.5
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.
Freescale Semiconductor
RDRAD[7:0]
PERAD[7:0]
Reset
Reset
Field
Field
7:0
7:0
W
W
R
R
RDRAD7
PERAD7
Reduced Drive Port AD
0 Full drive strength at output.
1 Associated pin drives at about 1/3 of the full drive strength.
Pull Device Enable Port AD
0 Pull-up or pull-down device is disabled.
1 Pull-up or pull-down device is enabled.
Port AD Reduced Drive Register (RDRAD)
Port AD Pull Device Enable Register (PERAD)
0
0
7
7
RDRAD6
PERAD6
Figure 4-6. Port AD Pull Device Enable Register (PERAD)
0
0
6
6
Figure 4-5. Port AD Reduced Drive Register (RDRAD)
Table 4-4. RDRAD Field Descriptions
Table 4-5. PERAD Field Descriptions
RDRAD5
PERAD5
MC9S12HZ256 Data Sheet, Rev. 2.05
0
0
5
5
RDRAD4
PERAD4
0
0
4
4
Description
Description
RDRAD3
PERAD3
0
0
3
3
Chapter 4 Port Integration Module (PIM9HZ256V2)
RDRAD2
PERAD2
0
0
2
2
RDRAD1
PERAD1
0
0
1
1
RDRAD0
PERAD0
0
0
0
0
127
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