MC908GZ60CFUE Datasheet, PDF (301/352 Pages) Freescale Semiconductor, Inc – Standard features, Features of the CPU08

ADDRESS BUS[15:8]
Break Module (BRK)
ADDRESS BUS[15:0]
BREAK ADDRESS REGISTER HIGH
8-BIT COMPARATOR
8-BIT COMPARATOR
BREAK ADDRESS REGISTER LOW
CONTROL
BKPT
(TO SIM)
ADDRESS BUS[7:0]
Figure 20-2. Break Module Block Diagram
Addr.
Register Name
Bit 7
6
5
4
3
2
1
Bit 0
Break Status Register ^Read:
R
R
R
R
R
SBSW
R
R
$FE00
(BSR) Write:
Note⁽¹⁾
See page 304. _Reset:
0
$FE03
Break Flag Control ^Read: _BCFE
R
R
R
R
R
R
R
Register (BFCR) Write:
See page 304. _Reset:
0
$FE09
Break Address High ^Read: _{Bit 15}
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Register (BRKH) Write:
See page 303. _Reset:
0
0
0
0
0
0
0
0
$FE0A
Break Address Low ^Read: _{Bit 7}
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Register (BRKL) Write:
See page 303. _Reset:
0
0
0
0
0
0
0
0
Break Status and Control ^Read: _BRKE
BRKA
0
0
0
0
0
0
$FE0B
Register (BRKSCR) Write:
See page 303. _Reset:
0
0
0
0
0
0
0
0
1. Writing a 0 clears SBSW.
= Unimplemented
R = Reserved
Figure 20-3. Break I/O Register Summary
MC68HC908GZ60 • MC68HC908GZ48 • MC68HC908GZ32 Data Sheet, Rev. 6
Freescale Semiconductor
301