MC68HC08AB16A Datasheet, PDF (359/380 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Break Module (BRK)
Functional Description
IAB15–IAB8
IAB15–IAB0
BREAK ADDRESS REGISTER HIGH
8-BIT COMPARATOR
8-BIT COMPARATOR
BREAK ADDRESS REGISTER LOW
CONTROL
BREAK
IAB7–IAB0
Figure 22-1. Break Module Block Diagram
Addr.
Register Name
Bit 7
6
5
4
3
2
1
Bit 0
Read:
SBSW
$FE00
SIM
Break
Status Register
(SBSR)
Write:
R
R
R
R
R
R
R
Note
Reset: 0
0
0
0
0
0
0
0
Read:
$FE03
SIM Break Flag Control
Register (SBFCR)
Write:
BCFE
R
R
R
R
R
R
R
Reset: 0
Read:
$FE0C
Break Address Register
High (BRKH)
Write:
Bit 15
14
13
Reset: 0
0
0
12
11
10
0
0
0
9
Bit 8
0
0
Read:
$FE0D
Break Address Register
Low (BRKL)
Write:
Bit 7
6
5
4
3
2
1
Bit 0
Reset: 0
0
0
0
0
0
0
0
Read:
0
0
0
0
0
0
$FE0E
Break Status and Control
Register (BRKSCR)
Write:
BRKE
BRKA
Reset: 0
0
0
0
0
0
0
0
Note: Writing a logic 0 clears SBSW.
= Unimplemented
R = Reserved
Figure 22-2. Break Module I/O Register Summary
MC68HC08AB16A — Rev. 2.0
MOTOROLA
Break Module (BRK)
For More Information On This Product,
Go to: www.freescale.com
Technical Data
359