M68ICS08GR datasheet(67/408 Pages) FREESCALE

部件名	M68ICS08GR

功能描述	M68HC08 Microcontrollers

PDF	408 Pages

Scroll/Zoom	100%

制造商	FREESCALE [Freescale Semiconductor, Inc]

网页	http://www.freescale.com

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Resets and Interrupts

Interrupts

MC68HC908GR8 — Rev 4.0

Technical Data

MOTOROLA

Resets and Interrupts

Figure 4-4. Interrupt Stacking Order

After every instruction, the CPU checks all pending interrupts if the I bit

is not set. If more than one interrupt is pending when an instruction is

done, the highest priority interrupt is serviced first. In the example shown

in Figure 4-5, if an interrupt is pending upon exit from the interrupt

service routine, the pending interrupt is serviced before the LDA

instruction is executed.

CONDITION CODE REGISTER

ACCUMULATOR

INDEX REGISTER (LOW BYTE)*

PROGRAM COUNTER (HIGH BYTE)

PROGRAM COUNTER (LOW BYTE)

•

STACKING

ORDER

*High byte of index register is not stacked.

$00FF DEFAULT ADDRESS ON RESET

UNSTACKING

ORDER

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M68ICS08GR 数据表(PDF) 67 Page - Freescale Semiconductor, Inc