MC68020RC25E Freescale Semiconductor, MC68020RC25E Datasheet - Page 35

• Manufacturer Part Number: MC68020RC25E
• Description: IC MICROPROC 32-BIT 25MHZ 114PGA
• Manufacturer: Freescale Semiconductor

Specifications of MC68020RC25E

• Processor Type: M680x0 32-Bit
• Speed: 25MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 114-PGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Other names: Q1165253

2.3.2 Exception Stack Frame
Exception processing saves the most volatile portion of the current processor context on
the top of the supervisor stack. This context is organized in a format called the exception
stack frame. This information always includes a copy of the SR, the PC, the vector offset
of the vector, and the frame format field. The frame format field identifies the type of stack
frame. The RTE instruction uses the value in the format field to properly restore the
information stored in the stack frame and to deallocate the stack space. The general form
of the exception stack frame is illustrated in Figure 2-1. Refer to Section 6 Exception
Processing for a complete list of exception stack frames.
2-6
Figure 2-1. General Exception Stack Frame
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Freescale Semiconductor, Inc.
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M68020 USER’S MANUAL
FORMAT
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ADDITIONAL PROCESSOR STATE INFORMATION
(2, 6, 12, OR 42 WORDS, IF NEEDED)
12
PROGRAM COUNTER
STATUS REGISTER
VECTOR OFFSET
0
MOTOROLA