MC68EC000EI20 Freescale Semiconductor, MC68EC000EI20 Datasheet - Page 338
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MC68EC000EI20
Manufacturer Part Number
MC68EC000EI20
Description
IC MPU 32BIT 20MHZ 68-PLCC
Manufacturer
Freescale Semiconductor
Specifications of MC68EC000EI20
Processor Type
M680x0 32-Bit
Speed
20MHz
Voltage
3.3V, 5V
Mounting Type
Surface Mount
Package / Case
68-PLCC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
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Floating Point Instructions
FDIV
Operation:
Assembler
Syntax:
Attributes:
Description: Converts the source operand to extended precision (if necessary) and divides
Operation Table:
5-36
that number into the number in the destination floating-point data register. Stores the
result in the destination floating-point data register.
FDIV will round the result to the precision selected in the floating-point control register.
FSDIV and FDDIV will round the result to single or double precision, respectively,
regardless of the rounding precision selected in the floating-point control register.
NOTES:
1. If the source operand is a NAN, refer to 1.6.5 Not-A-Numbers for more information.
2. Sets the DZ bit in the floating-point status register exception byte.
3. Sets the OPERR bit in the floating-point status register exception byte.
DESTINATION
In Range
Infinity
Zero
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
FPn
FDIV. < fmt > < ea > ,FPn
FDIV.X FPm,FPn
*FrDIV. < fmt > < ea > ,FPn
*FrDIV.X FPm,FPn
where r is rounding precision, S or D
Format = (Byte, Word, Long, Single, Double, Extended, Packed)
*Supported by MC68040 only
+
+
–
–
+
–
+
+ 0.0
– 0.0
+ inf
– inf
Source
Floating-Point Divide
In Range
Divide
(MC6888X, MC68040)
FPn
+ 0.0
+ 0.0
+ inf
– inf
– +
+ inf
– inf
+ inf
– inf
2
2
SOURCE
NAN
Zero
3
1
– inf
+ inf
+ inf
– inf
– +
2
2
+ 0.0
– 0.0
+ 0.0
– 0.0
Infinity
NAN‡
MOTOROLA
FDIV
+ 0.0
+ 0.0
– 0.0
– 0.0
–
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