W29C040P-90B Winbond Electronics, W29C040P-90B Datasheet - Page 24

• Manufacturer Part Number: W29C040P-90B
• Manufacturer: Winbond Electronics

Specifications of W29C040P-90B

• Density: 4Mb
• Access Time (max): 90ns
• Interface Type: Parallel
• Boot Type: Bottom/Top
• Address Bus: 19b
• Operating Supply Voltage (typ): 5V
• Operating Temp Range: 0C to 70C
• Package Type: PLCC
• Program/erase Volt (typ): 5V
• Sync/async: Asynchronous
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Word Size: 8b
• Number Of Words: 512K
• Supply Current: 50mA
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / Rohs Status: Supplier Unconfirmed

13. HOW TO READ THE TOP MARKING
Example: The top marking of 32-pin TSOP W29C040T-90
1
2
3
4
st
nd
rd
th
line: winbond logo
line: the lot number
line: the tracking code: 149 O B SA
line: the part number: W29C040T-90
149: Packages made in ’01, week 49
O: Assembly house ID: A means ASE, O means OSE, ...etc.
B: IC revision; A means version A, B means version B, ...etc.
SA: Process code
2138977A-A12
W29C040T-90
149OBSA
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W29C040