HCS08 datasheet(89/316 Pages) NXP

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Chapter 6 Parallel Input/Output Control

MC9S08SG8 MCU Series Data Sheet, Rev. 8

Freescale Semiconductor

6.6.3.3

Port C Pull Enable Register (PTCPE)

6.6.3.4

Port C Slew Rate Enable Register (PTCSE)

321

000

PTCPE3

PTCPE2

PTCPE1

PTCPE0

Reset:

000

Figure 6-21. Internal Pull Enable for Port C Register (PTCPE)

Table 6-20. PTCPE Register Field Descriptions

Field

Description

3:0

PTCPE[3:0]

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

enabled for the associated PTC pin. For port C 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 C bit n.

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

321

000

PTCSE3

PTCSE2

PTCSE1

PTCSE0

Reset:

000

Figure 6-22. Slew Rate Enable for Port C Register (PTCSE)

Table 6-21. PTCSE Register Field Descriptions

Field

Description

3:0

PTCSE[3:0]

Output Slew Rate Enable for Port C Bits — Each of these control bits determines if the output slew rate control

is enabled for the associated PTC pin. For port C pins that are configured as inputs, these bits have no effect.

0 Output slew rate control disabled for port C bit n.

1 Output slew rate control enabled for port C bit n.

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