PC912XDP512F0MPVR datasheet(572/1348 Pages) FREESCALE

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PC912XDP512F0MPVR 데이터시트(PDF) 572 Page - Freescale Semiconductor, Inc

부품명	PC912XDP512F0MPVR

상세설명	HCS12X Microcontrollers

PDF	1348 Pages

Scroll/Zoom	100%

제조업체	FREESCALE [Freescale Semiconductor, Inc]

홈페이지	http://www.freescale.com

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572 / 1348 page

Chapter 15 Background Debug Module (S12XBDMV2)

MC9S12XDP512 Data Sheet, Rev. 2.21

572

Freescale Semiconductor

15.2

External Signal Description

A single-wire interface pin called the background debug interface (BKGD) pin is used to communicate

with the BDM system. During reset, this pin is a mode select input which selects between normal and

special modes of operation. After reset, this pin becomes the dedicated serial interface pin for the

background debug mode.

15.3

Memory Map and Register Deﬁnition

15.3.1

Module Memory Map

Table 15-1 shows the BDM memory map when BDM is active.

Table 15-1. BDM Memory Map

Global Address

Module

Size

(Bytes)

0x7FFF00–0x7FFF0B

BDM registers

0x7FFF0C–0x7FFF0E

BDM ﬁrmware ROM

0x7FFF0F

Family ID (part of BDM ﬁrmware ROM)

0x7FFF10–0x7FFFFF

BDM ﬁrmware ROM

240

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