MC68EC040FE20A Freescale Semiconductor, MC68EC040FE20A Datasheet - Page 326

• Manufacturer Part Number: MC68EC040FE20A
• Description: IC MPU 32BIT 20MHZ 184-CQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68EC040FE20A

• Processor Type: M680x0 32-Bit
• Speed: 20MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 184-CQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

10.7.3 Timings in the Floating-Point Unit
Times in parentheses are the total time that the stage uses to execute an instruction even
though the stage can pass data to the next stage earlier. So that 2(3) in the conversion
stage means that the instruction takes two cycles to execute, but this stage is actually
busy for three cycles.
MOTOROLA
FADD,FSUB
FMUL
FDIV
Instruction
Opclass
0
0
0
0
0
0
2
2
2
2
2
2
2
2
2
0
0
0
0
2
2
2
2
2
2
2
2
0
0
0
0
2
2
2
Size
S,D
S,D
S,D
S,D
S,D
S,D
S,D
S,D
S,D
S,D
S,D
S,D
—
—
—
—
—
—
—
—
—
—
—
—
X
X
X
X
X
X
X
X
X
Freescale Semiconductor, Inc.
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Precision
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
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M68040 USER’S MANUAL
Norm,Norm
Norm,Norm
Norm,Norm
Norm,Norm
Norm,Norm
Norm,Norm
Norm,Norm
Norm,Norm
Norm,Zero
Norm,Zero
Norm,Zero
Operands
Zero,Zero
Zero,Zero
Zero,Zero
— ,NAN
— ,NAN
— ,NAN
— ,Zero
— ,NAN
— ,Zero
— ,NAN
— ,Zero
— ,NAN
— ,Zero
— ,NAN
— ,Zero
— ,Inf
— ,Inf
— ,Inf
— ,Inf
— ,Inf
— ,Inf
— ,Inf
— ,Inf
Conversion
2(3)
2(3)
2(3)
2(3)
3(4)
3(4)
2(3)
2(3)
3(4)
2(3)
2(3)
4
4
4
4
4
4
5
5
5
4
4
4
4
4
4
5
5
5
4
4
4
4
4
Execution
37.5
37.5
3
3
0
0
0
3
3
0
0
0
3
3
0
0
0
5
0
0
0
5
0
0
0
5
0
0
0
0
0
0
0
0
Normalization
2(3)
2(3)
2(3)
2(3)
2(3)
2(3)
2(3)
2(3)
2(3)
2(3)
2(3)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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