SC9S12XS256J1MAA FREESCALE [Freescale Semiconductor, Inc], SC9S12XS256J1MAA Datasheet - Page 78
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SC9S12XS256J1MAA
Manufacturer Part Number
SC9S12XS256J1MAA
Description
HCS12 Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.SC9S12XS256J1MAA.pdf
(736 pages)
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1
Port Integration Module (S12XSPIMV1)
2.3.11
This register is used to select reduced drive for the pins associated with ports A, B, E, and K. If enabled,
the pins drive at approx. 1/5 of the full drive strength. The reduced drive function is independent of which
function is being used on a particular pin.
78
Address 0x000D (PRR)
PUPBE
PUPAE
Read: Anytime. The data source depends on the data direction value.
Write: Anytime.
Field
Reset
1
0
W
R
Port B Pull-up Enable—Enable pull-up devices on all port input pins
This bit configures whether a pull-up device is activated on all associated port input pins. If a pin is used as output
this bit has no effect.
1 Pull-up device enabled
0 Pull-up device disabled
Port A Pull-up Enable—Enable pull-up devices on all port input pins
This bit configures whether a pull-up device is activated on all associated port input pins. If a pin is used as output
this bit has no effect.
1 Pull-up device enabled
0 Pull-up device disabled
RDPK
Ports ABEK Reduced Drive Register (RDRIV)
0
7
= Unimplemented or Reserved
Table 2-10. PUCR Register Field Descriptions (continued)
Figure 2-9. Ports ABEK Reduced Drive Register (RDRIV)
0
0
6
S12XS Family Reference Manual, Rev. 1.09
0
0
5
RDPE
0
4
Description
3
0
0
0
0
2
Freescale Semiconductor
Access: User read/write
RDPB
0
1
RDPA
0
0
1
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