MC9S12T64 Datasheet, PDF (559/608 Pages) Motorola, Inc – Specification

Freescale Semiconductor, Inc.
Breakpoint (BKP)
Register Descriptions
Breakpoint
Second Address
Expansion
Register(BKP1X)
In Dual Address Mode, this register contains the data to be matched
against expansion address lines for the second address breakpoint
when a page is selected. In Full Breakpoint Mode, this register is not
used.
Read and write: anytime
Address Offset
Read:
Write:
Reset:
$002D
Bit 7
0
0
6
5
4
0
BK1V5
BK1V4
0
0
0
= Reserved or unimplemented
3
BK1V3
0
2
BK1V2
0
1
BK1V1
0
Bit 0
BK1V0
0
BK1V[5:0] — Second Address Breakpoint Expansion Address Value
Breakpoint Data
(Second Address)
High Byte Register
(BKP1H)
In Dual Address Mode, this register is used to compare against the high
order address lines. In Full Breakpoint Mode, this register is used to
compare against the high order data lines.
Read and write: anytime
Address Offset $002E
Bit 7
6
5
Read:
Bit 15
14
13
Write:
Reset: 0
0
0
4
3
2
12
11
10
0
0
0
1
Bit 0
9
Bit 8
0
0
Breakpoint Data
(Second Address)
Low Byte Register
(BKP1L)
In Dual Address Mode, this register is used to compare against the low
order address lines. In Full Breakpoint Mode, this register is used to
compare against the low order data lines.
Read and write: anytime
Address Offset $002F
Bit 7
6
5
4
3
2
1
Bit 0
Read:
Bit 7
6
5
4
3
2
1
Bit 0
Write:
Reset: 0
0
0
0
0
0
0
0
Breakpoint (BKP)
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MC9S12T64Revision 1.1.1