mc68hc912dg128 Freescale Semiconductor, Inc, mc68hc912dg128 Datasheet - Page 380

• Manufacturer Part Number: mc68hc912dg128
• Description: M68hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

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Technical Data
380
BK1RWE BK1RW BK0RWE BK0RW
–
–
–
0
1
1
X
–
–
–
0
1
BK1RWE — R/W Compare Enable
BK1RW — R/W Compare Value
BK0RWE — R/W Compare Enable
BK0RW — R/W Compare Value
Table 18-11. Breakpoint Read/Write Control
Freescale Semiconductor, Inc.
Enables the comparison of the R/W signal to further specify what
causes a match. This bit is NOT useful in program breakpoints or in
full breakpoint mode. This bit is used in conjunction with a second
address in dual address mode when BKDBE=1.
When BK1RWE = 1, this bit determines the type of bus cycle to
match.
Enables the comparison of the R/W signal to further specify what
causes a match. This bit is not useful in program breakpoints.
When BK0RWE = 1, this bit determines the type of bus cycle to match
on.
For More Information On This Product,
0 = R/W is not used in comparisons
1 = R/W is used in comparisons
0 = A write cycle will be matched
1 = A read cycle will be matched
0 = R/W is not used in the comparisons
1 = R/W is used in comparisons
0 = Write cycle will be matched
1 = Read cycle will be matched
0
1
1
–
–
–
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X
0
1
–
–
–
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
Read/Write Selected
MC68HC912DG128 — Rev 3.0
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