MC68340AG25E Freescale Semiconductor, MC68340AG25E Datasheet - Page 149
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MC68340AG25E
Manufacturer Part Number
MC68340AG25E
Description
IC MPU 32BIT 25MHZ 144-LQFP
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68340FE25E.pdf
(441 pages)
Specifications of MC68340AG25E
Processor Type
M683xx 32-Bit
Speed
25MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
144-LQFP
Controller Family/series
68K
Core Size
32 Bit
No. Of I/o's
16
Cpu Speed
25MHz
No. Of Timers
2
Embedded Interface Type
UART
Digital Ic Case Style
LQFP
Rohs Compliant
Yes
Processor Series
M683xx
Core
CPU32
Maximum Clock Frequency
25 MHz
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
0 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
Details
Available stocks
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Manufacturer
Quantity
Price
Company:
Part Number:
MC68340AG25E
Manufacturer:
Freescale Semiconductor
Quantity:
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Part Number:
MC68340AG25E
Manufacturer:
Freescale Semiconductor
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5.3.1.1.2 Table Lookup and Interpolation (TBL). To maximize throughput for real-time
applications, reference data is often precalculated and stored in memory for quick access.
The storage of sufficient data points can require an inordinate amount of memory. The
TBL instruction uses linear interpolation to recover intermediate values from a sample of
data points, and thus conserves memory.
When the TBL instruction is executed, the CPU32 looks up two table entries bounding the
desired result and performs a linear interpolation between them. Byte, word, and long-
word operand sizes are supported. The result can be rounded according to a round-to-
nearest algorithm or returned unrounded along with the fractional portion of the calculated
result (byte and word results only). This extra precision can be used to reduce cumulative
error in complex calculations. See 5.3.4 Using the TBL Instructions for examples.
5.3.1.2 UNIMPLEMENTED INSTRUCTIONS. The ability to trap on unimplemented
instructions allows user-supplied code to emulate unimplemented capabilities or to define
special-purpose functions. However, Motorola reserves the right to use all currently
unimplemented instruction operation codes for future M68000 enhancements. See 5.5.2.8
Illegal or Unimplemented Instructions for more details.
5.3.2 Instruction Format and Notation
All instructions consist of at least one word. Some instructions can have as many as
seven words, as shown in Figure 5-6. The first word of the instruction, called the operation
word, specifies instruction length and the operation to be performed. The remaining
words, called extension words, further specify the instruction and operands. These words
may be immediate operands, extensions to the effective address mode specified in the
operation word, branch displacements, bit number, special register specifications, trap
operands, or argument counts.
5-12
Figure 5-6. Instruction Word General Format
15
(ONE WORD, SPECIFIES OPERATION AND MODES)
DESTINATION EFFECTIVE ADDRESS EXTENSION
Freescale Semiconductor, Inc.
IMMEDIATE OPERAND OR SOURCE ADDRESS
For More Information On This Product,
(IF ANY, ONE TO THREE WORDS)
(IF ANY, ONE TO THREE WORDS)
SPECIAL OPERAND SPECIFIERS
(IF ANY, ONE OR TWO WORDS)
MC68340 USER’S MANUAL
Go to: www.freescale.com
OPERATION WORD
EXTENSION
0
MOTOROLA
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