MC9S12E128 Datasheet, PDF (139/606 Pages) Freescale Semiconductor, Inc – HCS12 Microcontrollers

3.3.2.4
Chapter 3 Port Integration Module (PIM9E128V1)
Port M Reduced Drive Register (RDRM)
7
6
5
4
3
2
1
0
R
0
RDRM7
RDRM6
RDRM5
RDRM4
RDRM3
RDRM1
RDRM0
W
Reset
0
0
0
0
0
0
0
0
= Reserved or Unimplemented
Figure 3-13. Port M Reduced Drive Register (RDRM)
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.
Table 3-10. RDRM Field Descriptions
Field
Description
7:3, 1:0 Reduced Drive Port M
RDRM[7:3, 0 Full drive strength at output
1:0]
1 Associated pin drives at about 1/3 of the full drive strength.
MC9S12E128 Data Sheet, Rev. 1.07
Freescale Semiconductor
139