MC68HC908GZ8 Datasheet, PDF (78/344 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Break Module (BRK)
ADDRESS BUS[15:8]
ADDRESS BUS[15:0]
BREAK ADDRESS REGISTER HIGH
8-BIT COMPARATOR
8-BIT COMPARATOR
BREAK ADDRESS REGISTER LOW
CONTROL
ADDRESS BUS[7:0]
Figure 6-1. Break Module Block Diagram
BKPT
(TO SIM)
Addr.
Register Name
$FE00
Break Status Register ^Read:
(BSR) Write:
See page 81. _Reset:
Read:
$FE02
Reserved Write:
Reset:
$FE03
Break Flag Control ^Read:
Register (BFCR) Write:
See page 82. _Reset:
$FE09
Break Address High ^Read:
Register (BRKH) Write:
See page 81. _Reset:
$FE0A
Break Address Low ^Read:
Register (BRKL) Write:
See page 81. _Reset:
$FE0B
Break Status and Control ^Read:
Register (BRKSCR) Write:
See page 80. _Reset:
1. Writing a logic 0 clears SBSW.
Bit 7
R
R
0
BCFE
0
Bit15
0
Bit 7
0
BRKE
0
6
5
R
R
R
R
0
0
R
R
Bit14
Bit13
0
0
Bit 6
Bit 5
0
0
0
BRKA
0
0
= Unimplemented
4
3
2
1
Bit 0
SBSW
R
R
R
Note⁽¹⁾
R
0
R
R
R
R
R
0
0
0
0
0
R
R
R
R
R
Bit12
Bit11
Bit10
Bit9
Bit8
0
0
0
0
0
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R = Reserved
Figure 6-2. Break I/O Register Summary
Data Sheet
78
Break Module (BRK)
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MC68HC908GZ8
MOTOROLA