mc9s12e256 Freescale Semiconductor, Inc, mc9s12e256 Datasheet - Page 157
mc9s12e256
Manufacturer Part Number
mc9s12e256
Description
Hcs12 Microcontrollers 16-bit Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC9S12E256.pdf
(602 pages)
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3.3.7.6
Read: Anytime. Write: Anytime.
The Port U Polarity Select Register selects whether a pull-down or a pull-up device is connected to the pin.
The Port U Polarity Select Register is effective only when the corresponding Data Direction Register bit
is set to 0 (input) and the corresponding Pull Device Enable Register bit is set to 1.
3.3.7.7
Read: Anytime. Write: Anytime.
This register selects the module connected to port U.
Freescale Semiconductor
MODRR[3:0]
PPSU[7:0]
Reset
Reset
Field
Field
7:0
3:0
W
W
R
R
PPSU7
Pull Select Port U
0 A pull-up device is connected to the associated port T pin.
1 A pull-down device is connected to the associated port T pin.
Pull Select Port U
0 If enabled, TIM2 channel is connected to the associated port U pin.
1 If enabled, PWM channel is connected to the associated port U pin.
Port U Polarity Select Register (PPSU)
Port U Module Routing Register (MODRR)
0
0
0
7
7
= Reserved or Unimplemented
PPSU6
Figure 3-48. Port U Module Routing Register (MODRR)
0
0
0
6
6
Figure 3-47. Port U Polarity Select Register (PPSU)
Table 3-35. MODRR Field Descriptions
Table 3-34. PPSU Field Descriptions
PPSU5
MC9S12E256 Data Sheet, Rev. 1.08
0
0
0
5
5
PPSU4
0
0
0
4
4
Description
Description
MODRR3
PPSU3
3
0
3
0
Chapter 3 Port Integration Module (PIM9E256V1)
MODRR2
PPSU2
0
0
2
2
MODRR1
PPSU1
0
0
1
1
MODRR0
PPSU0
0
0
0
0
157
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