250 nanometer
The 250 nanometer (250 nm or 0.25 µm) process refers to a level of semiconductor process technology that was reached by most manufacturers in the 1997–1998 timeframe.
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Wikipedia
The 250 nanometer (250 nm or 0.25 µm) process refers to a level of semiconductor process technology that was reached by most manufacturers in the 1997–1998 timeframe.