P912XDP512F0MPVR datasheet(808/1348 Pages) FREESCALE

808 / 1348 page

Chapter 22 DP512 Port Integration Module (S12XDP512PIMV2)

MC9S12XDP512 Data Sheet, Rev. 2.21

810

Freescale Semiconductor

22.2

External Signal Description

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

22.2.1

Signal Properties

Table 22-1 shows all the pins and their functions that are controlled by the PIM. Refer to Section 22.4,

“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 22-1. Pin Functions and Priorities (Sheet 1 of 7)

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]

ADDR[15:8]

mux

IVD[15:8]2

High-order external bus address output

(multiplexed with IVIS data)

Mode

dependent3

GPIO

I/O

General-purpose I/O

PB[7:1]

ADDR[7:1]

mux

IVD[7:1]2

Low-order external bus address output

(multiplexed with IVIS data)

Mode

dependent3

GPIO

I/O

General-purpose I/O

PB[0]

ADDR[0]

mux

IVD02

Low-order external bus address output

(multiplexed with IVIS data)

UDS

Upper data strobe

GPIO

I/O

General-purpose I/O

PC[7:0]

DATA[15:8]

I/O

High-order bidirectional data input/output

Conﬁgurable for reduced input threshold

Mode

dependent3

GPIO

I/O

General-purpose I/O

PD[7:0]

DATA[7:0]

I/O

Low-order bidirectional data input/output

Conﬁgurable for reduced input threshold

Mode

dependent3

GPIO

I/O

General-purpose I/O

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