SC9S12XS256J1MAA FREESCALE [Freescale Semiconductor, Inc], SC9S12XS256J1MAA Datasheet - Page 79

• Manufacturer Part Number: SC9S12XS256J1MAA
• Description: HCS12 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

single-chip
single-chip
2.3.12
Freescale Semiconductor
Special
Normal
Reset:
Address 0x001C (PRR)
RDPK
RDPE
RDPB
RDPA
Field
7
4
1
0
W
R
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
Port B 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 A 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
NECLK
Depen-
ECLK Control Register (ECLKCTL)
Mode
dent
0
1
7
= Unimplemented or Reserved
NCLKX2
1
1
1
6
Figure 2-10. ECLK Control Register (ECLKCTL)
Table 2-11. RDRIV Register Field Descriptions
S12XS Family Reference Manual, Rev. 1.09
DIV16
0
0
0
5
EDIV4
0
0
0
4
Description
EDIV3
3
0
0
0
EDIV2
Port Integration Module (S12XSPIMV1)
0
0
0
2
Access: User read/write
EDIV1
0
0
0
1
EDIV0
0
0
0
0
79
1