Table 6-29. PTEPE Register Field Descriptions

 

 

 

Field

 

Description

 

 

7–0

Internal Pull Enable for Port E Bits. Each of these control bits determines if the internal pull-up device is enabled

PTEPEn

for the associated PTE pin. For port E pins configured as outputs, these bits have no effect and the internal pull

 

devices are disabled.

 

0

Internal pull-up device disabled for port E bit n.

 

1

Internal pull-up device enabled for port E bit n.

 

 

 

6.7.5.7Port E Slew Rate Enable Register (PTESE)

R

W

Reset:

7

6

5

4

3

2

1

0

PTESE7

PTESE6

PTESE5

PTESE4

PTESE3

PTESE2

PTESE1

PTESE0

 

 

 

 

 

 

 

 

0

0

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

 

Figure 6-33. Slew Rate Enable for Port E Register (PTESE)

 

 

Table 6-30. PTESE Register Field Descriptions

 

 

 

Field

 

Description

 

 

7–0

Output Slew Rate Enable for Port E Bits. Each of these control bits determines if the output slew rate control is

PTESEn

enabled for the associated PTE pin. For port E pins 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.

 

 

 

6.7.5.8Port E Drive Strength Selection Register (PTEDS)

R

W

Reset:

7

6

5

4

3

2

1

0

PTEDS7

PTEDS6

PTEDS5

PTEDS4

PTEDS3

PTEDS2

PTEDS1

PTEDS0

 

 

 

 

 

 

 

 

0

0

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

Figure 6-34. Drive Strength Selection for Port E Register (PTEDS)

 

 

Table 6-31. PTEDS Register Field Descriptions

 

 

 

 

Field

Description

 

 

 

7–0

Output Drive Strength Selection for Port E Bits. Each of these control bits selects between low and high output

PTEDSn

drive for the associated PTE pin. For port E pins configured as inputs, these bits have no effect.

 

 

0 Low output drive strength selected for port E bit n.

 

 

1 High output drive strength selected for port E bit n.

 

 

 

 

 

MCF51QE128 MCU Series Reference Manual, Rev. 3

 

 

 

 

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Freescale Semiconductor MCF51QE128RM manual Port E Slew Rate Enable Register Ptese, Ptepe Register Field Descriptions