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參數資料
| 型號： | W49F020-90B |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | PROM |
| 英文描述： | 256K X 8 CMOS FLASH MEMORY |
| 中文描述： | 256K X 8 FLASH 5V PROM, 90 ns, PDIP32 |
| 封裝： | PLASTIC, DIP-32 |
| 文件頁數： | 1/21頁 |
| 文件大?。?/td> | 190K |
| 代理商： | W49F020-90B |
Preliminary W49F020
256K
×
8 CMOS FLASH MEMORY
Publication Release Date: October 1999
- 1 -
Revision A1
GENERAL DESCRIPTION
The W49F020 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 V
PP
is not
required. The unique cell architecture of the W49F020 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: 50
μ
S (max.)
Fast Erase operation: 100 mS (typ.)
Fast Read access time: 70/90 nS
Endurance: 1K/10K cycles (typ.)
Twenty-year data retention
Hardware data protection
One 8K byte Boot Block with Lockout
protection
Low power consumption
Active current: 25 mA (typ.)
Standby current: 20
μ
A (typ.)
Automatic program and erase timing with
internal V
PP
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 and 32-pin
TSOP and 32-pin-PLCC
相關PDF資料 |
PDF描述 |
|---|---|
| W49F020P-70 | 256K X 8 CMOS FLASH MEMORY |
| W49F020P-70B | 256K X 8 CMOS FLASH MEMORY |
| W49F020P-90 | 256K X 8 CMOS FLASH MEMORY |
| W49F020P-90B | 256K X 8 CMOS FLASH MEMORY |
| W49F020-70 | Circular Connector; Body Material:Aluminum; Series:PT07; No. of Contacts:8; Connector Shell Size:12; Connecting Termination:Crimp; Circular Shell Style:Jam Nut Receptacle; Circular Contact Gender:Pin; Insert Arrangement:12-8 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W49F020P-70 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
| W49F020P-70B | 制造商:WINBOND 制造商全稱:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
| W49F020P-90 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
| W49F020P-90B | 制造商:WINBOND 制造商全稱:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
| W49F020Q-70 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
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