參數(shù)資料
型號: W49F002U-90BN
廠商: WINBOND ELECTRONICS CORP
元件分類: PROM
英文描述: 256K X 8 FLASH 5V PROM, 90 ns, PDIP32
封裝: PLASTIC, DIP-32
文件頁數(shù): 1/27頁
文件大?。?/td> 233K
代理商: W49F002U-90BN
W49F002U
256K
× 8 CMOS FLASH MEMORY
Publication Release Date: February 21, 2002
- 1 -
Revision A6
GENERAL DESCRIPTION
The W49F002U is a 2-megabit, 5-volt only CMOS flash memory organized as 256K
× 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:
5-volt Read
5-volt Erase
5-volt Program
Fast Program operation:
Byte-by-Byte programming: 35 S (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
Active current: 25 mA (typ.)
Standby current: 20 A (typ.)
Automatic program and erase timing with
internal VPP generation
End of program or erase detection
Toggle bit
Data polling
Latched address and data
TTL compatible I/O
JEDEC standard byte-wide pinouts
Available packages: 32-pin DIP, 32-pin
STSOP (8 mm
× 14 mm), 32-pin TSOP
(8 mm
× 20 mm) and 32-pin-PLCC
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