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W49F020Q-90 Datasheet(PDF) 1 Page - Winbond |
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W49F020Q-90 Datasheet(HTML) 1 Page - Winbond |
1 / 21 page 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 VPP 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 µS (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 µA (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 and 32-pin TSOP and 32-pin-PLCC |
Similar Part No. - W49F020Q-90 |
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Similar Description - W49F020Q-90 |
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