LFEBS12UB Freescale Semiconductor, LFEBS12UB Datasheet - Page 151

• Manufacturer Part Number: LFEBS12UB
• Description: KIT STUDENT LEARNING S12 DG128
• Manufacturer: Freescale Semiconductor

Specifications of LFEBS12UB

• Architecture: 8/16-bit
• Code Gen Tools Included: Code Warrior
• Silicon Manufacturer: Freescale
• Core Architecture: S12
• Core Sub-architecture: S12
• Silicon Core Number: MC9S12
• Silicon Family Name: S12D
• Kit Contents: HCS12 DG128 Learning Kit
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1. Read: Anytime.
1. Read: Anytime.
2.3.57
2.3.58
Freescale Semiconductor
Address 0x0264
Address 0x0265
Write: Anytime.
Write: Anytime.
PERH
PPSH
Field
Field
Reset
Reset
7-0
7-0
W
W
R
R
Port H pull device enable—Enable pull devices on input pins
These bits configure whether a pull device is activated, if the associated pin is used as an input. This bit has no effect
if the pin is used as an output. Out of reset no pull device is enabled.
1 Pull device enabled.
0 Pull device disabled.
Port H pull device select—Determine pull device polarity on input pins
This register serves a dual purpose by selecting the polarity of the active interrupt edge as well as selecting a pull-
up or pull-down device if enabled.
1 A rising edge on the associated Port H pin sets the associated flag bit in the PIFH register. A pull-down device is
0 A falling edge on the associated Port H pin sets the associated flag bit in the PIFH register.A pull-up device is
PERH7
PPSH7
Port H Pull Device Enable Register (PERH)
Port H Polarity Select Register (PPSH)
connected to the associated Port H pin, if enabled by the associated bit in register PERH and if the port is used
as input.
connected to the associated Port H pin, if enabled by the associated bit in register PERH and if the port is used
as input.
0
0
7
7
PERH6
PPSH6
Figure 2-55. Port H Pull Device Enable Register (PERH)
0
0
6
6
Figure 2-56. Port H Polarity Select Register (PPSH)
Table 2-53. PERH Register Field Descriptions
Table 2-54. PPSH Register Field Descriptions
MC9S12XE-Family Reference Manual , Rev. 1.23
PERH5
PPSH5
0
0
5
5
PERH4
PPSH4
0
0
4
4
Description
Description
PERH3
PPSH3
3
0
3
0
Chapter 2 Port Integration Module (S12XEPIMV1)
PERH2
PPSH2
0
0
2
2
Access: User read/write
Access: User read/write
PERH1
PPSH1
0
0
1
1
PERH0
PPSH0
0
0
0
0
151
(1)
(1)