MC68EC030CFE25C Freescale Semiconductor, MC68EC030CFE25C Datasheet - Page 563

• Manufacturer Part Number: MC68EC030CFE25C
• Description: IC MPU 32BIT ENH 25MHZ 132-CQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68EC030CFE25C

• Processor Type: M680x0 32-Bit
• Speed: 25MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 132-CQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

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12-38
The processor also halts if it receives a bus error or address error during the
vector table read operations or the prefetch for the first instruction after an
conditions, which include MMU address translation cache miss, reset, bus
error, address error, spurious interrupt, autovectored interrupt, and F-line
STATUS to assert for three clock cycles to indicate that normal instruction
case since these exceptions are processed immediately, not just at instruction
Figure 12-22 shows the assertion of STATUS, indicating that the processor
has halted due to a double bus fault. Once a bus error has occurred, any
additional bus error exception occurring before the execution of the first
instruction of the bus error handler routine constitutes a double bus fault.
external reset. STATUS remains asserted until the processor is reset.
Figure 12-21 illustrates the assertion of the STATUS signal for other exception
instruction when no coprocessor responds. Exception processing causes
processing has stopped. Instruction boundaries cannot be determined in this
boundaries.
I N STRUCTI O N
BOUNDARI E S
STATUS
REFI L L
STATUS
REFI L L
CLK
CLK
Figure 12-20. Trace or Interrupt Exception
Figure 12-21. Other Exceptions
M068030 USER'S MANUAL
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