MC68030CRC33C Freescale Semiconductor, MC68030CRC33C Datasheet - Page 299
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MC68030CRC33C
Manufacturer Part Number
MC68030CRC33C
Description
IC MPU 32BIT ENHANCED 128-PGA
Manufacturer
Freescale Semiconductor
Specifications of MC68030CRC33C
Processor Type
M680x0 32-Bit
Speed
33MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
128-PGA
Family Name
M68000
Device Core
ColdFire
Device Core Size
32b
Frequency (max)
33MHz
Instruction Set Architecture
RISC
Supply Voltage 1 (typ)
5V
Operating Supply Voltage (max)
5.25V
Operating Supply Voltage (min)
4.75V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Through Hole
Pin Count
128
Package Type
PGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
Compliant
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8.4 EXCEPTION STACK FRAME FORMATS
8.3 COPROCESSOR CONSID ERATIONS
to be saved and restored for all coprocessor-generated exceptions, regardless
The MC68882 floating-point coprocessor is an example of this type of co-
The MC68030 provides six different stack frames for exception processing.
The set of frames includes the normal four- and six-word stack frames, the
four-word throwaway stack frame, the coprocessor mid-instruction stack
frame, and the short and long bus fault stack frames.
When the MC68030 writes or reads a stack frame, it uses long-word operand
transfers wherever possible. Using a long-word-aligned stack pointer with
formance. The processor does not necessarily read or write the stack frame
The system software should not depend on a particular exception generating
a particular stack frame. For compatibility with future devices, the software
should be able to handle any type of stack frame for any type of exception.
Table 8-6 summarizes the stack frames defined for the M68000 Family.
The nature of the coprocessor and the exception handler routine determines
whether or not saving the state of one or more coprocessors with the cpSAVE
coprocessor instructions to be executed concurrently, it may require its state
of whether or not the coprocessor is accessed during the handler routine.
processor. On the other hand, the MC68881 floating-point coprocessor re-
quires FSAVE and FRESTORE instructions within an exception handler routine
only if the exception handler itself uses the coprocessor.
memory that is on a 32-bit port greatly enhances exception processing per-
data in sequential order.
Exception handler programmers should consider carefully whether to save
and restore the context of a coprocessor at the beginning and end of handler
instruction (i.e., bus errors, interrupts, and coprocessor-related exceptions).
and cpRESTORE instructions is required. If the coprocessor allows multiple
routines for exceptions that can occur during the execution of a coprocessor
MC68030 USER'S MANUAL
MOTOROLA
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