SC9S12HY64J0CLHR datasheet(94/790 Pages) FREESCALE

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Port Integration Module (S12HYPIMV1)

MC9S12HY/HA-Family Reference Manual, Rev. 1.04

Freescale Semiconductor

2.3.35

Port P Pull Device Enable Register (PERP)

2.3.36

Port P Polarity Select Register (PPSP)

Address 0x025C

Access: User read/write1

1 Read: Anytime.

Write: Anytime.

76543210

PERP7

PERP6

PERP5

PERP4

PERP3

PERP2

PERP1

PERP0

Reset

11111111

Figure 2-33. Port P Pull Device Enable Register (PERP)

Table 2-31. PERP Register Field Descriptions

Field

Description

7-0

PERP

Port P pull device enable—Enable pull devices on input pins

These bits conﬁgure whether a pull device is activated, if the associated pin is used as an input. This bit has no effect

if the pin is used as an output. Out of reset all pull device is enabled.

1 Pull device enabled.

0 Pull device disabled.

Address 0x025D

Access: User read/write1

1 Read: Anytime.

Write: Anytime.

76543210

PPSP7

PPSP6

PPSP5

PPSP4

PPSP3

PPSP2

PPSP1

PPSP0

Reset

11111111

Figure 2-34. Port P Polarity Select Register (PPSP)

Table 2-32. PPSP Register Field Descriptions

Field

Description

7-0

PPSP

Port P pull device select—Determine pull device polarity on input pins

This register serves a dual purpose by selecting the polarity of the active interrupt edge as well as selecting a pull-up

or pull-down device if enabled.

1 A pull-down device is connected to the associated Port P pin, if enabled by the associated bit in register PERP and

if the port is used as input.

0 A pull-up device is connected to the associated Port P pin, if enabled by the associated bit in register PERP and

if the port is used as input.

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