mc68hc908bd48 Freescale Semiconductor, Inc, mc68hc908bd48 Datasheet - Page 266

• Manufacturer Part Number: mc68hc908bd48
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Break Module (BRK)
20.4.1 Flag Protection During Break Interrupts
20.4.2 CPU During Break Interrupts
20.4.3 TIM During Break Interrupts
20.4.4 COP During Break Interrupts
20.5 Low-Power Modes
20.5.1 Wait Mode
Data Sheet
266
The BCFE bit in the SIM break flag control register (SBFCR) enables
software to clear status bits during the break state.
The CPU starts a break interrupt by:
The break interrupt begins after completion of the CPU instruction in
progress. If the break address register match occurs on the last cycle of
a CPU instruction, the break interrupt begins immediately.
A break interrupt stops the timer counters.
The COP is disabled during a break interrupt when V
the RST pin.
The WAIT and STOP instructions put the MCU in low power-
consumption standby modes.
If enabled, the break module is active in wait mode. In the break routine,
the user can subtract one from the return address on the stack if SBSW
is set (see
SBSW bit by writing logic 0 to it.
•
•
Loading the instruction register with the SWI instruction
Loading the program counter with $FFFC and $FFFD ($FEFC and
$FEFD in monitor mode)
Section 7. System Integration Module
Break Module (BRK)
MC68HC908BD48
Freescale Semiconductor
(SIM)). Clear the
TST
is present on
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Rev. 2.1