LFDAS12XSCT Freescale Semiconductor, LFDAS12XSCT Datasheet - Page 80

• Manufacturer Part Number: LFDAS12XSCT
• Description: HARDWARE MC9S12XS 48-PIN
• Manufacturer: Freescale Semiconductor

Specifications of LFDAS12XSCT

• Module/board Type: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: -

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.
80
Address 0x000D (PRR)
PUPBE
PUPAE
Read: Anytime. The data source depends on the data direction value.
Write: Anytime.
RDPK
RDPE
Field
Field
Reset
1
0
7
4
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
Port K reduced drive—Select reduced drive for output port
This bit configures the drive strength of all associated port output pins as either full or reduced. If a pin is used as
input this bit has no effect. The reduced drive function is independent of which function is being used on a particular
pin.
1 Reduced drive selected (approx. 1/5 of the full drive strength)
0 Full drive strength enabled
Port E reduced drive—Select reduced drive for output port
This bit configures the drive strength of all associated port output pins as either full or reduced. If a pin is used as
input this bit has no effect. The reduced drive function is independent of which function is being used on a particular
pin.
1 Reduced drive selected (approx. 1/5 of the full drive strength)
0 Full drive strength enabled
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
Table 2-11. RDRIV Register Field Descriptions
S12XS Family Reference Manual, Rev. 1.11
0
0
5
RDPE
0
4
Description
Description
3
0
0
0
0
2
Freescale Semiconductor
Access: User read/write
RDPB
0
1
RDPA
0
0
1