Development Support
IAB15–IAB8
BREAK ADDRESS REGISTER HIGH
8-BIT COMPARATOR
IAB15–IAB0
CONTROL
BREAK
8-BIT COMPARATOR
BREAK ADDRESS REGISTER LOW
IAB7–IAB0
Figure 18-1. Break Module Block Diagram
Addr.
Register Name
Bit 7
6
5
4
3
2
1
BW
0
Bit 0
Read:
SIM Break Status Register
R
R
R
R
R
R
R
$FE00
(SBSR) Write:
See page 277.
Reset:
Read:
SIM Break Flag Control
BCFE
0
R
R
R
R
R
R
R
$FE03
$FE0C
$FE0D
$FE0E
Register (SBFCR) Write:
See page 278.
Reset:
Read:
Break Address Register High
Bit 15
0
14
13
0
12
0
11
0
10
0
9
0
1
Bit 8
0
(BRKH) Write:
See page 276.
Reset:
Read:
0
Break Address Register Low
Bit 7
0
6
0
5
4
3
2
Bit 0
(BRKL) Write:
See page 276.
Reset:
Read:
0
0
0
0
0
0
0
0
0
0
0
0
Break Status and Control
BRKE
0
BRKA
Register (BRKSCR) Write:
See page 276.
Reset:
0
0
0
0
0
0
0
Note: Writing a 0 clears BW.
= Unimplemented
R
= Reserved
Figure 18-2. I/O Register Summary
Data Sheet
274
MC68HC908MR32 • MC68HC908MR16 — Rev. 6.0
MOTOROLA
Development Support
FREESCALE [ Freescale ]
