ARM Cortex-M3 Manual de usuario Pagina 8

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8
The Thumb
-
2 instruction set
Variable
-
length instructions
ARM instructions are a fixed length of 32 bits
Thumb instructions are a fixed length of 16
bits
Thumb
-
2 instructions can be either 16
-
bit or
32
-
bit
Thumb
-
2
gives approximately 26%
improvement in code density over ARM
Thumb
-
2
gives approximately 25%
improvement in performance over
Thumb
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