w39l040a Winbond Electronics Corp America, w39l040a Datasheet - Page 23

• Manufacturer Part Number: w39l040a
• Description: 512k ? 8 Cmos Flash Memory
• Manufacturer: Winbond Electronics Corp America

10. HOW TO READ THE TOP MARKING
Example: The top marking of 32-pin TSOP W39L040AT-70
1
2
3
4
st
nd
rd
th
line: Winbond logo
line: the lot number
line: the tracking code: 325 O B SA
line: the part number: W39L040AT70B
325: Packages made in '03, week 25
O: Assembly house ID: A means ASE, O means OSE, ...etc.
B: IC revision; A means version A, B means version B, ...etc.
FA: Process code
W39L040AT70B
2138977A-A12
325OBFA
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Publication Release Date: April 14, 2005
W39L040A
Revision A3