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M68ICS08GR Datasheet(PDF) 284 Page - Freescale Semiconductor, Inc

Part # M68ICS08GR
Description  M68HC08 Microcontrollers
PDF  408 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

M68ICS08GR Datasheet(HTML) 284 Page - Freescale Semiconductor, Inc

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System Integration Module (SIM)
Technical Data
MC68HC908GR8 — Rev 4.0
284
System Integration Module (SIM)
MOTOROLA
Figure 19-10. Interrupt Processing
19.6.1.1 Hardware Interrupts
A hardware interrupt does not stop the current instruction. Processing of
a hardware interrupt begins after completion of the current instruction.
When the current instruction is complete, the SIM checks all pending
hardware interrupts. If interrupts are not masked (I bit clear in the
NO
NO
NO
YES
NO
NO
YES
NO
YES
YES
AS MANY INTERRUPTS
I BIT SET?
FROM RESET
BREAK
I BIT SET?
IRQ0
INTERRUPT?
IRQ
INTERRUPT?
SWI
INSTRUCTION?
RTI
INSTRUCTION?
FETCH NEXT
INSTRUCTION
UNSTACK CPU REGISTERS
STACK CPU REGISTERS
SET I BIT
LOAD PC WITH INTERRUPT VECTOR
EXECUTE INSTRUCTION
YES
YES
AS EXIST ON CHIP
INTERRUPT?
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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