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W49F002U Datasheet, PDF (1/23 Pages) Winbond – 256K X 8 CMOS FLASH MEMORY | |||
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W49F002U
256K Ã 8 CMOS FLASH MEMORY
GENERAL DESCRIPTION
The W49F002U is a 2-megabit, 5-volt only CMOS flash memory organized as 256K Ã 8 bits. The
device can be programmed and erased in-system with a standard 5V power supply. A 12-volt VPP is
not required. The unique cell architecture of the W49F002U results in fast program/erase operations
with extremely low current consumption (compared to other comparable 5-volt flash memory
products). The device can also be programmed and erased using standard EPROM programmers.
FEATURES
⢠Single 5-volt operations:
â 5-volt Read
â 5-volt Erase
â 5-volt Program
⢠Fast Program operation:
â Byte-by-Byte programming: 35 µS (typ.)
⢠Fast Erase operation: 100 mS (typ.)
⢠Fast Read access time: 70/90/120 nS
⢠Endurance: 10K cycles (typ.)
⢠Ten-year data retention
⢠Hardware data protection
⢠One 16K byte Boot Block with Lockout
protection
⢠Two 8K byte Parameter Blocks
⢠Two Main Memory Blocks (96K, 128K) Bytes
⢠Low power consumption
â Active current: 25 mA (typ.)
â Standby current: 20 µA (typ.)
⢠Automatic program and erase timing with
internal VPP generation
⢠End of program or erase detection
â Toggle bit
â Data polling
⢠Latched address and data
⢠TTL compatible I/O
⢠JEDEC standard byte-wide pinouts
⢠Available packages: 32-pin DIP and 32-pin
TSOP and 32-pin-PLCC
Publication Release Date: April 2000
-1-
Revision A2
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