MC68EC000EI20 Freescale Semiconductor, MC68EC000EI20 Datasheet - Page 319
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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FATAN
Operation:
Assembler
Syntax:
Attributes:
Description: Converts the source operand to extended precision (if necessary) and
Operation Table:
Floating-Point Status Register:
MOTOROLA
NOTE: If the source operand is a NAN, refer to 1.6.5 Not-A-Numbers for more information.
calculates the arc tangent of that number. Stores the result in the destination floating-
point data register. The result is in the range of [ – /2... + /2].
Condition Codes:
Quotient Byte:
Exception Byte:
Accrued Exception Byte:
DESTINATION
Result
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
Arc Tangent of Source
FATAN. < fmt >
FATAN.X
FATAN.X
Format = (Byte, Word, Long, Single, Double, Extended, Packed)
+
Arc Tangent
(MC6888X, M68040FPSP)
In Range
Affected as described in 3.6.2 Conditional Testing.
Not affected.
BSUN
SNAN
OPERR
OVFL
UNFL
DZ
INEX2
INEX1
Affected as described in IEEE exception and trap compati-
bility in the appropriate user’s manual.
Arc Tangent
< ea > ,FPn
FPm,FPn
FPm,FPnz
– +
+ 0.0
Cleared
Refer to 1.6.5 Not-A-Numbers.
Cleared
Cleared
Refer to underflow in the appropriate user’s
manual.
Cleared
Refer to inexact result in the appropriate
user’s manual.
If < fmt > is packed, refer to inexact result on
decimal input in the appropriate user’s
manual; cleared otherwise.
FPn
SOURCE
Zero
– 0.0 + /2
– +
Floating Point Instructions
Infinity
FATAN
– /2
–
5-17
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