MC912DG128A Motorola, MC912DG128A Datasheet - Page 349

• Manufacturer Part Number: MC912DG128A
• Description: Microcontrollers
• Manufacturer: Motorola

BRKAL — Breakpoint Address Register, Low Byte
BRKDH — Breakpoint Data Register, High Byte
BRKAH — Breakpoint Address Register, High Byte
BRKDL — Breakpoint Data Register, Low Byte
23-dev
MOTOROLA
RESET:
RESET:
RESET:
RESET:
Bit 15
Bit 15
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
0
0
0
0
14
14
6
6
0
6
0
6
0
6
6
0
These bits are used to compare against the most significant byte of the
address bus.
These bits are used to compare against the least significant byte of the
address bus. These bits may be excluded from being used in the match
if BK0ALE = 0.
These bits are compared to the most significant byte of the data bus or
the most significant byte of the address bus in dual address modes.
BKEN[1:0], BKDBE, and BKMBH control how this byte will be used in the
breakpoint comparison.
These bits are compared to the least significant byte of the data bus or
the least significant byte of the address bus in dual address modes.
13
13
5
0
5
5
0
5
0
5
5
0
Development Support
12
12
4
0
4
4
0
4
0
4
4
0
11
11
3
0
3
3
0
3
0
3
3
0
10
10
2
0
2
0
2
2
0
2
2
0
MC68HC912DT128A Rev 2.0
1
9
0
1
1
0
1
1
0
1
9
0
Development Support
Bit 0
Bit 8
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 8
0
0
0
0
Breakpoints
$0023
$0024
$0022
$0025
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