MC9S08GT16A Datasheet, PDF (96/300 Pages) Freescale Semiconductor, Inc – Microcontrollers

Parallel Input/Output
7
R
0
W
Reset
0
6
5
4
3
2
0
PTEPE5
PTEPE4
PTEPE3
PTEPE2
0
0
0
0
0
Figure 6-25. Pullup Enable for Port E (PTEPE)
1
PTEPE1
0
0
PTEPE0
0
Table 6-18. PTEPE Field Descriptions
Field
Description
5:0
PTEPE[5:0]
Pullup Enable for Port E Bits — For port E pins that are inputs, these read/write control bits determine whether
internal pullup devices are enabled. For port E pins that are configured as outputs, these bits are ignored and
the internal pullup devices are disabled.
0 Internal pullup device disabled.
1 Internal pullup device enabled.
7
R
0
W
Reset
0
6
5
4
3
2
1
0
PTESE5
PTESE4
PTESE3
PTESE2
PTESE1
0
0
0
0
0
0
Figure 6-26. Slew Rate Control Enable for Port E (PTESE)
0
PTESE0
0
Table 6-19. PTESE Field Descriptions
Field
Description
5:0
PTESE[5:0]
Slew Rate Control Enable for Port E Bits — For port E pins that are outputs, these read/write control bits
determine whether the slew rate controlled outputs are enabled. For port E pins that are configured as inputs,
these bits are ignored.
0 Slew rate control disabled.
1 Slew rate control enabled.
7
R
0
W
Reset
0
6
5
4
3
2
0
PTEDD5
PTEDD4
PTEDD3
PTEDD2
0
0
0
0
0
Figure 6-27. Data Direction for Port E (PTEDD)
1
PTEDD1
0
0
PTEDD0
0
Table 6-20. PTEDD Field Descriptions
Field
Description
5:0
Data Direction for Port E Bits — These read/write bits control the direction of port E pins and what is read for
PTEDD[5:0] 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.
MC9S08GT16A/GT8A Data Sheet, Rev. 1
96
Freescale Semiconductor