MC68EC040FE20A Freescale Semiconductor, MC68EC040FE20A Datasheet - Page 268

• 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: -

9.7 FLOATING-POINT ARITHMETIC EXCEPTIONS
The following eight user floating-point arithmetic exceptions are listed in order of priority.
The MC68040 generates the first seven exceptions in hardware and the eighth only in
software.
INEX1 exception is the condition that exists when a packed decimal operand cannot be
converted exactly to the extended-precision format in the current rounding mode. Since
9-24
• Branch/Set on Unordered (BSUN)
• Signaling Not-A-Number (SNAN)
• Operand Error (OPERR)
• Overflow (OVFL)
• Underflow (UNFL)
• Divide by Zero (DZ)
• Inexact 2 (INEX2)
• Inexact 1 (INEX1)
DENORMALIZED SINGLE PRECISION
FORMAT IN STATE FRAME
FORMAT IN STATE FRAME
DENORMALIZED DOUBLE PRECISION
Figure 9-9. Format of Denormalized Operand in State Frame
Freescale Semiconductor, Inc.
95
95
S
S
For More Information On This Product,
94
94
EXP
EXP
$0
$0
31 30
S
M68040 USER’S MANUAL
Go to: www.freescale.com
80
80
(a) Single Precision
(b) Double Precision
63 62
S
$0
79
79
23 22
$0
$0
$0
52 51
64
64
63
63
0
0
62
62
FRACTION
40
39
MANTISSA
MANTISSA
MANTISSA
0
$0
11
10
$0
MOTOROLA
0
0
0