MC68EN360AI25VL Freescale, MC68EN360AI25VL Datasheet - Page 171

• Manufacturer Part Number: MC68EN360AI25VL
• Manufacturer: Freescale

Specifications of MC68EN360AI25VL

• Family Name: M68000
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 25MHz
• Instruction Set Architecture: RISC
• Operating Supply Voltage (max): 3.3V
• Operating Supply Voltage (min): 2.7V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 240
• Package Type: FQFP
• Lead Free Status / RoHS Status: Compliant

5.3.4.2 TABLE EXAMPLE 2: COMPRESSED TABLE. In Example 2 (see Figure 5-8), the
data from Example 1 has been compressed by limiting the maximum value of the indepen-
dent variable. Instead of the range 0 X = 65535, X is limited to 0 X 1023. The table has
been compressed to only five entries, but up to 256 levels of interpolation are allowed
between entries.
Since the table is reduced from 257 to 5 entries, independent variable X must be scaled
appropriately. In this case the scaling factor is 64, and the scaling is done by a single instruc-
tion:
LSR.W #6,Dx
Extreme table compression with many levels of interpolation is
possible only with highly linear functions. The table entries within
the range of interest are listed in Table 5-14.
Y
Freescale Semiconductor, Inc.
Entry Number
Table 5-14. Compressed Table Entries
For More Information On This Product,
256
2
3
Figure 5-8. Table Example 2
MC68360 USER’S MANUAL
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INDEPENDENT VARIABLE
512
NOTE
X-Value
512
786
X
786
Y-Value
1311
1966
1024
CPU32+