MC9S08DZ96F2CLL datasheet(121/458 Pages) FREESCALE

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Chapter 6 Parallel Input/Output Control

MC9S08DZ128 Series Data Sheet, Rev. 1

Freescale Semiconductor

121

6.5.5.3

Port E Pull Enable Register (PTEPE)

NOTE

Pull-down devices only apply when using pin interrupt functions, when

corresponding edge select and pin select functions are conﬁgured.

6.5.5.4

Port E Slew Rate Enable Register (PTESE)

Note: Slew rate reset default values may differ between engineering samples and ﬁnal production parts. Always initialize slew

rate control to the desired value to ensure correct operation.

76543210

PTEPE7

PTEPE6

PTEPE5

PTEPE4

PTEPE3

PTEPE2

PTEPE1

PTEPE0

Reset:

00000000

Figure 6-34. Internal Pull Enable for Port E Register (PTEPE)

Table 6-32. PTEPE Register Field Descriptions

Field

Description

7:0

PTEPE[7:0]

Internal Pull Enable for Port E Bits — Each of these control bits determines if the internal pull-up 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 pull-up device disabled for port E bit n.

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

76543210

PTESE7

PTESE6

PTESE5

PTESE4

PTESE3

PTESE2

PTESE11

PTESE1 has no effect on the input-only PTE1 pin.

PTESE0

Reset:

00000000

Figure 6-35. Slew Rate Enable for Port E Register (PTESE)

Table 6-33. PTESE Register Field Descriptions

Field

Description

7:0

PTESE[7:0]

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.

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