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AT
Designator
XX
Product Family
25DF = SPI serial flash memory
XX
Device Density
08 = 8Mbit
X
Interface
1 = Serial
XX
Wafer Level Option
WD = Bare dieWB = Bumped die, Pb-free
X
Die/Wafer Carrier Option
T = Tape and reel
XX
Die/Wafer Backrind Thickness
20 = 20mils11 = 11mils
X
Operating Voltage
N = 1.65V to 1.95V
Note: Part number description table describes usual part-numbering system for more chips, therefore this table can contain information, that might not be valid for the actually selected chip. The information here are provided on the best-effort basis and might be either inaccurate or incoplete. Therefore always check the latest datasheet of the chip for part number description detail. If you find some inaccuracy, let us please know.