mc68hc908gr8a Freescale Semiconductor, Inc, mc68hc908gr8a Datasheet - Page 217

• Manufacturer Part Number: mc68hc908gr8a
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
1. Writing a 0 clears SBSW.
$FE00
$FE02
$FE03
$FE09
$FE0A
$FE0B
Addr.
SIM Break Status Register
Break Status and Control
SIM Break Flag Control
Register Name
Break Address High
Register (BRKSCR)
Break Address Low
Register (SBFCR)
ADDRESS BUS[15:0]
Register (BRKH)
Register (BRKL)
See page 220.
See page 220.
See page 219.
See page 219.
See page 219.
Reserved
(SBSR)
MC68HC908GR8A • MC68HC908GR4A Data Sheet, Rev. 5
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
Write:
Figure 18-2. Break Module Block Diagram
Figure 18-3. Break I/O Register Summary
ADDRESS BUS[15:8]
ADDRESS BUS[7:0]
BRKE
BCFE
Bit15
Bit 7
Bit 7
R
R
0
0
0
0
0
BREAK ADDRESS REGISTER HIGH
BREAK ADDRESS REGISTER LOW
8-BIT COMPARATOR
8-BIT COMPARATOR
= Unimplemented
BRKA
Bit14
Bit 6
R
R
R
6
0
0
0
0
Bit13
Bit 5
R
R
R
5
0
0
0
0
0
Bit12
Bit 4
R
R
R
R
4
0
0
0
0
0
= Reserved
CONTROL
Bit11
Bit 3
R
R
R
3
0
0
0
0
0
Bit10
Bit 2
R
R
R
2
0
0
0
0
0
BKPT
(TO SIM)
Break Module (BRK)
Note
SBSW
Bit 1
Bit9
R
R
1
0
0
0
0
0
0
(1)
Bit 0
Bit 0
Bit8
R
R
R
0
0
0
0
0
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