HCS08 datasheet(89/374 Pages) NXP

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Chapter 6 Parallel Input/Output

MC9S08JM60 Series Data Sheet, Rev. 5

Freescale Semiconductor

321

PTCPE6

PTCPE5

PTCPE4

PTCPE3

PTCPE2

PTCPE1

PTCPE0

Reset

000

Figure 6-14. Internal Pullup Enable for Port C (PTCPE)

Table 6-13. PTCPE Register Field Descriptions

Field

Description

6:0

PTCPE[6:0]

Internal Pullup Enable for Port C Bits — Each of these control bits determines if the internal pullup 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 pullup devices are disabled.

0 Internal pullup device disabled for port C bit n.

1 Internal pullup device enabled for port C bit n.

321

PTCSE6

PTCSE5

PTCSE4

PTCSE3

PTCSE2

PTCSE1

PTCSE0

Reset

011

111

Figure 6-15. Output Slew Rate Control Enable for Port C (PTCSE)

Table 6-14. PTCSE Register Field Descriptions

Field

Description

6:0

PTCSE[6:0]

Output Slew Rate Control Enable for Port C Bits — Each of these control bits determine whether 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.

321

PTCDS6

PTCDS5

PTCDS4

PTCDS3

PTCDS2

PTCDS1

PTCDS0

Reset

000

Figure 6-16. Output Drive Strength Selection for Port C (PTCDS)

Table 6-15. PTCDS Register Field Descriptions

Field

Description

6:0

PTCDS[6:0]

Output Drive Strength Selection for Port C Bits — Each of these control bits selects between low and high

output drive for the associated PTC pin.

0 Low output drive enabled for port C bit n.

1 High output drive enabled for port C bit n.

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