mc68hc705k1 Freescale Semiconductor, Inc, mc68hc705k1 Datasheet - Page 42

• Manufacturer Part Number: mc68hc705k1
• Description: Hcmos Microcontroller Unit
• Manufacturer: Freescale Semiconductor, Inc

Interrupts
Technical Data
IRQ/V
PA0
PA3
PA2
PA1
PP
MASK OPTION REGISTER
NOTE:
Programming the LEVEL bit to a logic 0 selects the edge-sensitive-only
trigger option. When LEVEL = 0:
If the IRQ/V
•
•
Freescale Semiconductor, Inc.
Figure 4-1. External Interrupt Logic
For More Information On This Product,
A falling edge on the IRQ/V
request.
A subsequent interrupt request can be latched only after the
voltage level on the IRQ/V
again to logic 0.
IRQ VECTOR FETCH
PP
INTERNAL DATA BUS
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pin is not in use, connect it to the V
Interrupts
RST
V
DD
LATCH
IRQ
R
IRQ STATUS/CONTROL REGISTER
PP
PP
pin returns to logic 1 and then falls
pin latches an external interrupt
MC68HC705K1 — Rev. 2.0
DD
pin.
TO BIH & BIL
INSTRUCTION
PROCESSING
EXTERNAL
INTERRUPT
REQUEST