SC312XDP512F0MPVR datasheet(976/1348 Pages) FREESCALE

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Chapter 24 DG128 Port Integration Module (S12XDG128PIMV2)

MC9S12XDP512 Data Sheet, Rev. 2.21

978

Freescale Semiconductor

External Signal Description

This section lists and describes the signals that do connect off-chip.

24.0.3

Signal Properties

Table 24-1 shows all the pins and their functions that are controlled by the PIM. Refer to Section ,

“Functional Description” for the availability of the individual pins in the different package options.

NOTE

If there is more than one function associated with a pin, the priority is

indicated by the position in the table from top (highest priority) to bottom

(lowest priority).

Table 24-1. Pin Functions and Priorities (Sheet 1 of 5)

Port

Pin Name

Pin Function

and Priority

I/O

Description

Pin Function

after Reset

—

BKGD

MODC1

MODC input during RESET

BKGD

I/O

S12X_BDM communication pin

PA[7:0]

GPIO

I/O

General-purpose I/O

GPIO

PB[7:0]

GPIO

I/O

General-purpose I/O

GPIO

PE[7]

XCLKS1

External clock selection input during RESET

ECLKX2

Free-running clock output at Core Clock rate (ECLK x 2)

GPIO

I/O

General-purpose I/O

PE[6:5]

GPIO

I/O

General-purpose I/O

PE[4]

ECLK

Free-running clock output at the Bus Clock rate or

programmable divided in normal modes

GPIO

I/O

General-purpose I/O

PE[3:2]

GPIO

I/O

General-purpose I/O

PE[1]

IRQ

Maskable level- or falling edge-sensitive interrupt input

GPIO

I/O

General-purpose I/O

PE[0]

XIRQ

Non-maskable level-sensitive interrupt input

GPIO

I/O

General-purpose I/O

PK[7]

GPIO

I/O

General-purpose I/O

GPIO

PK[5:0]

GPIO

I/O

General-purpose I/O

PT[7:0]

IOC[7:0]

I/O

Enhanced Capture Timer Channels 7–0 input/output

GPIO

I/O

General-purpose I/O

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