Break module block diagram, Break i/o register summary – Freescale Semiconductor MC68HC08KH12 User Manual

Page 243

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MC68HC(7)08KH12

Rev. 1.1

Advance Information

Freescale Semiconductor

243

Figure 16-1. Break Module Block Diagram

IAB[15:8]

IAB[7:0]

8-BIT COMPARATOR

8-BIT COMPARATOR

CONTROL

BREAK ADDRESS REGISTER LOW

BREAK ADDRESS REGISTER HIGH

IAB[15:0]

BKPT

(TO SIM)

Table 16-1. Break I/O Register Summary

Addr.

Register Name

Bit 7

6

5

4

3

2

1

Bit 0

$FE0C

Break Address Register

High

(BRKH)

Read:

Bit15

Bit14

Bit13

Bit12

Bit11

Bit10

Bit9

Bit8

Write:

Reset:

0

0

0

0

0

0

0

0

$FE0D

Break Address Register

Low

(BRKL)

Read:

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Write:

Reset:

0

0

0

0

0

0

0

0

$FE0E

Break Status/Control

Register

(BRKSCR)

Read:

BRKE

BRKA

0

0

0

0

0

0

Write:

Reset:

0

0

0

0

0

0

0

0

= Unimplemented

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