MC68HC912B32MFU8 MOTOROLA [Motorola, Inc], MC68HC912B32MFU8 Datasheet - Page 126

• Manufacturer Part Number: MC68HC912B32MFU8
• Description: 16-Bit Microcontroller
• Manufacturer: MOTOROLA [Motorola, Inc]

BRKAH — Breakpoint Address Register, High Byte
BRKAL — Breakpoint Address Register, Low Byte
BRKDH — Breakpoint Data Register, High Byte
BRKDL — Breakpoint Data Register, Low Byte
126
MOTOROLA
RESET:
RESET:
RESET:
RESET:
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. BKEN[1:0], BKDBE, BK1ALE, and BKMBL control how this byte
will be used in the breakpoint comparison.
BK1RWE
–
–
–
0
1
1
Bit 15
Bit 15
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
0
0
0
0
BK1RW
X
–
–
–
0
1
14
14
6
0
6
6
0
6
0
6
6
0
Table 49 Breakpoint Read/Write Control
BK0RWE
0
1
1
–
–
–
13
13
5
0
5
5
0
5
0
5
5
0
BK0RW
12
12
X
0
1
–
–
–
4
0
4
4
0
4
0
4
4
0
R/W is don’t care for full mode or dual mode
BKP0
R/W is write for full mode or dual mode BKP0
R/W is read for full mode or dual mode BKP0
R/W is don’t care for dual mode BKP1
R/W is write for dual mode BKP1
R/W is read for dual mode BKP1
11
11
3
0
3
3
0
3
0
3
3
0
Read/Write Selected
10
10
2
0
2
2
0
2
0
2
2
0
1
9
0
1
1
0
1
9
0
1
1
0
MC68HC912B32TS/D
Bit 0
Bit 8
Bit 0
Bit 0
Bit 0
Bit 8
Bit 0
Bit 0
MC68HC912B32
0
0
0
0
$0022
$0023
$0024
$0025