mcf51ac256a Freescale Semiconductor, Inc, mcf51ac256a Datasheet - Page 119

• Manufacturer Part Number: mcf51ac256a
• Description: Mcf51ac Flexis
• Manufacturer: Freescale Semiconductor, Inc

6.5.5.3
6.5.5.4
Freescale Semiconductor
Reset:
Reset:
PTEDDn
PTEPEn
PTESEn
Field
Field
Field
7–0
7–0
7–0
W
W
R
R
PTEPE7
PTESE7
Data Direction for Port E Bits — These read/write bits control the direction of port E pins and what is read for
PTED reads.
0 Input (output driver disabled) and reads return the pin value.
1 Output driver enabled for port E bit n and PTED reads return the contents of PTEDn.
Internal Pull Enable for Port E Bits — Each of these control bits determines if the internal pullup device is
enabled for the associated PTE pin. For port E pins that are configured as outputs, these bits have no effect and
the internal pull devices are disabled.
0 Internal pullup device disabled for port E bit n.
1 Internal pullup device enabled for port E bit n.
Output Slew Rate Enable for Port E Bits — Each of these control bits determines if the output slew rate control
is enabled for the associated PTE pin. For port E pins that are configured as inputs, these bits have no effect.
0 Output slew rate control disabled for port E bit n.
1 Output slew rate control enabled for port E bit n.
Port E Pull Enable Register (PTEPE)
0
Port E Slew Rate Enable Register (PTESE)
0
7
7
MCF51AC256 ColdFire Integrated Microcontroller Reference Manual, Rev. 5
PTEPE6
PTESE6
Figure 6-24. Internal Pull Enable for Port E Register (PTEPE)
Figure 6-25. Slew Rate Enable for Port E Register (PTESE)
0
0
6
6
Table 6-22. PTEDD Register Field Descriptions
Table 6-23. PTEPE Register Field Descriptions
Table 6-24. PTESE Register Field Descriptions
PTEPE5
PTESE5
0
0
5
5
PTEPE4
PTESE4
0
0
4
4
Description
Description
Description
PTEPE3
PTESE3
3
0
3
0
PTEPE2
PTESE2
0
0
2
2
Parallel Input/Output Control
PTEPE1
PTESE1
0
0
1
1
PTEPE0
PTESE0
0
0
0
0
6-15