MC68HC08AZ32A Datasheet, PDF (154/456 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Break Module
Freescale Semiconductor, Inc.
10.5.2 Break Address Registers (BRKH and BRKL)
The break address registers contain the high and low bytes of the
desired breakpoint address. Reset clears the break address registers.
Bit 7
6
5
4
3
2
1
BRKH
$FE0C
Read:
Write:
Bit 15
14
13
12
11
10
9
Reset: 0
0
0
0
0
0
0
Bit 7
6
5
4
3
2
1
BRKL
$FE0D
Read:
Write:
Bit 7
6
5
4
3
2
1
Reset: 0
0
0
0
0
0
0
Figure 10-3. Break Address Registers (BRKH and BRKL)
Bit 0
Bit 8
0
Bit 0
Bit 0
0
10.6 Low-Power Modes
The WAIT and STOP instructions put the MCU in low-power-
consumption standby modes.
10.6.1 Wait Mode
If enabled, the break module is active in wait mode. The SIM break wait
bit (BW) in the SIM break status register indicates whether wait was
exited by a break interrupt. If so, the user can modify the return address
on the stack by subtracting one from it. (See System Integration
Module (SIM) on page 95).
10.6.2 Stop Mode
The break module is inactive in stop mode. The STOP instruction does
not affect break module register states.
Technical Data
154
MC68HC08AZ32A — Rev 1.0
Break Module
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