s908ab32ag0cfue Freescale Semiconductor, Inc, s908ab32ag0cfue Datasheet - Page 344
s908ab32ag0cfue
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s908ab32ag0cfue
Description
M68hc08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.S908AB32AG0CFUE.pdf
(392 pages)
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External Interrupt (IRQ)
18.6 IRQ Module During Break Interrupts
Technical Data
344
The system integration module (SIM) controls whether the IRQ latch can
be cleared during the break state. The BCFE bit in the break flag control
register (BFCR) enables software to clear the latches during the break
state. (See
To allow software to clear the IRQ latch during a break interrupt, write a
logic 1 to the BCFE bit. If a latch is cleared during the break state, it
remains cleared when the MCU exits the break state.
To protect the latches during the break state, write a logic 0 to the BCFE
bit. With BCFE at logic 0 (its default state), writing to the ACK bit in the
IRQ status and control register during the break state has no effect on
the IRQ latch.
Section 8. System Integration Module
External Interrupt (IRQ)
MC68HC908AB32
Freescale Semiconductor
(SIM).)
—
Rev. 1.1
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