A[0–17]
First Interrupt Instruction
Execution/Fetch
AC Electrical Characteristics
RD
20
WR
IRQA, IRQB,
IRQC, IRQD,
NMI
General
Purpose
I/O
21
17
19
a) First Interrupt Instruction Execution
IRQA, IRQB,
IRQC, IRQD,
NMI
18
b) General-Purpose I/O
Figure 2-4. External Fast Interrupt Timing
IRQA, IRQB,
IRQC, IRQD, NMI
15
IRQA, IRQB,
IRQC, IRQD, NMI
16
Figure 2-5. External Interrupt Timing (Negative Edge-Triggered)
DSP56321 Technical Data, Rev. 11
Freescale Semiconductor
2-9