MC68340AG16VE Freescale Semiconductor, MC68340AG16VE Datasheet - Page 149

• Manufacturer Part Number: MC68340AG16VE
• Description: IC MPU 32BIT 16MHZ 144-LQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68340AG16VE

• Processor Type: M683xx 32-Bit
• Speed: 16MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 144-LQFP
• Controller Family/series: 68K
• Core Size: 32 Bit
• No. Of I/o's: 16
• Cpu Speed: 16MHz
• No. Of Timers: 2
• Embedded Interface Type: UART
• Digital Ic Case Style: LQFP
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

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