MC68HC08AZ0 Datasheet, PDF (131/444 Pages) Motorola, Inc – Advance Information

Freescale Semiconductor, Inc.
Clock Generator Module (CGM)
CGM during break interrupts
CGM during break interrupts
The system integration module (SIM) controls whether status bits in
other modules can be cleared during the break state. The BCFE bit in
the SIM break flag control register (SBFCR) enables software to clear
status bits during the break state. See System Integration Module (SIM)
on page 85.
To allow software to clear status bits during a break interrupt, a ‘1’ should
be written to the BCFE bit. If a status bit is cleared during the break state,
it remains cleared when the MCU exits the break state.
To protect the PLLF bit during the break state, write a ‘0’ to the BCFE bit.
With BCFE at ‘0’ (its default state), software can read and write the PLL
control register during the break state without affecting the PLLF bit.
23-cgm
MOTOROLA
Clock Generator Module (CGM)
For More Information On This Product,
Go to: www.freescale.com
MC68HC08AZ0
129