Table 5-1. Vector summary (from lowest to highest priority)
Vector
number
Address (high/
low)
Vector name
Module
Source
Local enable
Description
Illegal opcode
Illegal address
POR
ICS
BDFR
—
—
—
CME
—
Illegal opcode
Illegal address
Power-on-reset
ICS loss of clk reset
BDM force reset
5.1.3 Hardware nested interrupt
This device has interrupt priority controller (IPC) module to provide up to four-level
nested interrupt capability. IPC includes the following features:
• Four-level programmable interrupt priority for each interrupt source.
• Support for prioritized preemptive interrupt service routines
• Low-priority interrupt requests are blocked when high-priority interrupt service
routines are being serviced.
• Higher or equal priority level interrupt requests can preempt lower priority
interrupts being serviced.
• Automatic update of interrupt priority mask with being serviced interrupt source
priority level when the interrupt vector is being fetched.
• Interrupt priority mask can be modified during main flow or interrupt service
execution.
• Previous interrupt mask level is automatically stored when interrupt vector is fetched
(four levels of previous values accommodated)
Interrupts
MC9S08PT60 Reference Manual, Rev. 4, 08/2014
126
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Содержание MC9S08PT60
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