mc68hc05l25 Freescale Semiconductor, Inc, mc68hc05l25 Datasheet - Page 44

• Manufacturer Part Number: mc68hc05l25
• Description: M68hc05 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Interrupts
6.6.2 Interrupt Control Register
IRQE — External Interrupt (IRQ) Enable
Bits 6–5 — Reserved
KWIE — KWI Enable
IRQS — External Interrupt (IRQ) Select Edge Sensitivity Only
Bits 2–0 — Reserved
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The IRQE bit enables external interrupt when the interrupt mask is cleared and IRQF is set. This bit is
cleared at reset.
These bits are not used and always return to zero.
The KWIE bit enables key wakeup interrupt when the KWIF bit is set. The KWIEx bit in the KWIEN
register also must be set for enabling KWI. This bit is cleared at reset.
The IRQS bit determines whether the LEVEL and EDGE or EDGE only will trigger the IRQ interrupt.
This bit is cleared at reset.
These bits are not used and always return to zero.
1 = IRQ enabled
0 = IRQ disabled
1 = KWI enabled
0 = KWI disabled
1 = Trigger only on negative EDGEs
0 = Trigger on low LEVEL and negative EDGEs
Address:
Reset:
Read:
Write:
$0008
IRQE
Bit 7
0
Figure 6-2. Interrupt Control Register (INTCR)
= Unimplemented
6
0
0
MC68HC05L25 Data Sheet, Rev. 3.1
5
0
0
KWIE
4
0
IRQS
3
0
2
0
0
1
0
0
Freescale Semiconductor
Bit 0
0
0