MC68EC000EI12 Freescale Semiconductor, MC68EC000EI12 Datasheet - Page 369

• Manufacturer Part Number: MC68EC000EI12
• Description: IC MPU 32BIT 12MHZ 68-PLCC
• Manufacturer: Freescale Semiconductor
• Series: 68K - M680X0r

Specifications of MC68EC000EI12

• Processor Type: M680x0 32-Bit
• Speed: 12MHz
• Voltage: 3.3V, 5V
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Core Size: 32 Bit
• Cpu Speed: 12MHz
• Digital Ic Case Style: PLCC
• No. Of Pins: 68
• Supply Voltage Range: 3V To 3.6V
• Operating Temperature Range: 0°C To +70°C
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Clock Frequency: 12MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

FLOGNP1
Operation:
Assembler
Syntax:
Attributes:
Description: Converts the source operand to extended precision (if necessary), adds one
Operation Table:
Floating-Point Status Register:
MOTOROLA
to that value, and calculates the natural logarithm of that intermediate result. Stores the
result in the destination floating-point data register. This function is not defined for input
values less than – 1.
Condition Codes:
Quotient Byte:
NOTES:
1. If the source operand is a NAN, refer to 1.6.5 Not-A-Numbers for more information.
2. If the source is – 1, sets the DZ bit in the floating-point status register
3. Sets the OPERR bit in the floating-point status register exception byte.
DESTINATION
exception byte and returns a NAN. If the source is < – 1, sets the OPERR bit
in the floating-point status register exception byte and returns a NAN.
Result
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
Log
FLOGNP1. < fmt > < ea > ,FPn
FLOGNP1.X FPm,FPn
FLOGNP1.X FPn
Format = (Byte, Word, Long, Single, Double, Extended, Packed)
e
+
In(x + 1)
of (Source + 1)
In Range
(MC6888X, M68040FPSP)
Affected as described in 3.6.2 Conditional Testing.
Not affected.
Log
In(x + 1)
e
– +
2
(x + 1)
FPn
+ 0.0
SOURCE
Zero
1
– 0.0 + inf
– +
Floating Point Instructions
FLOGNP1
Infinity
NAN
2
–
3
5-67