W39L512 Datasheet, PDF (1/25 Pages) Winbond – 64K 8 COMS FLASH MEMORY

W39L512
64K × 8 CMOS FLASH MEMORY
1. GENERAL DESCRIPTION
The W39L512 is a 512Kbit, 3.3-volt only CMOS flash memory organized as 64K × 8 bits. For flexible
erase capability, the 512Kbits of data are divided into 16 small even pages with 4 Kbytes. The byte-
wide (× 8) data appears on DQ7 − DQ0. The device can be programmed and erased in-system with a
standard 3.3V power supply. A 12-volt VPP is not required. The unique cell architecture of the
W39L512 results in fast program/erase operations with extremely low current consumption (compared
to other comparable 3.3-volt flash memory products). The device can also be programmed and erased
by using standard EPROM programmers.
2. FEATURES
• Single 3.3-volt operations
− 3.3-volt Read
− 3.3-volt Erase
− 3.3-volt Program
• Fast Program operation:
− Byte-by-Byte programming: 50 µS (max.)
• Fast Erase operation: 100 mS (max.)
• Read access time: 70/90 nS
• 16 even pages with 4K bytes
• Any individual page can be erased
• Hardware protection:
− Optional 8K byte Top/Bottom Boot Block with
lockout protection
• Flexible 4K-page size can be used as
Parameter Blocks
• Typical program/erase cycles:
− 1K/10K
• Twenty-year data retention
• Low power consumption
− Active current: 10 mA (typ.)
− Standby current: 15 µA (typ.)
• End of program detection
− Software method: Toggle bit/Data polling
• TTL compatible I/O
• JEDEC standard byte-wide pinouts
• Available packages: 32-pin PLCC and
32-pin STSOP (8 x 14 mm)
Publication Release Date: July 9, 2002
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Revision A2