mc68hc908gr8vp Freescale Semiconductor, Inc, mc68hc908gr8vp Datasheet - Page 65

• Manufacturer Part Number: mc68hc908gr8vp
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

6.3.3 TIMI and TIM2 During Break Interrupts
A break interrupt stops the timer counters and inhibits input captures.
6.3.4 COP During Break Interrupts
The COP is disabled during a break interrupt when V
6.4 Low-Power Modes
The WAIT and STOP instructions put the MCU in low power-consumption standby modes.
6.4.1 Wait Mode
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
writing logic 0 to it.
6.4.2 Stop Mode
A break interrupt causes exit from stop mode and sets the SBSW bit in the break status register.
6.5 Break Module Registers
These registers control and monitor operation of the break module:
6.5.1 Break Status and Control Register
The break status and control register (BRKSCR) contains break module enable and status bits.
BRKE — Break Enable Bit
Freescale Semiconductor
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This read/write bit enables breaks on break address register matches. Clear BRKE by writing a logic 0
to bit 7. Reset clears the BRKE bit.
1 = Breaks enabled on 16-bit address match
0 = Breaks disabled on 16-bit address match
Break status and control register (BRKSCR)
Break address register high (BRKH)
Break address register low (BRKL)
SIM break status register (SBSR)
SIM break flag control register (SBFCR)
Address:
Reset:
Read:
Write:
Figure 6-3. Break Status and Control Register (BRKSCR)
$FE0E
BRKE
Bit 7
0
MC68HC908GR8 • MC68HC908GR4 Data Sheet, Rev. 7
= Unimplemented
BRKA
6
0
5
0
0
4
0
0
Chapter 3 Low-Power
TST
is present on the RST pin.
3
0
0
2
0
0
Modes. Clear the BW bit by
1
0
0
Bit 0
0
0
Low-Power Modes
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