器件名称: W39L512-90
功能描述: 64K 8 COMS FLASH MEMORY
文件大小: 304.94KB 共25页
简 介: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 bytewide (× 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
Flexible 4K-page size can be used as Parameter Blocks 1K/10K
Typical program/erase cycles: Twenty-year data retention Low power consumption
Fast Program operation: Byte-by-Byte programming: 50 S (max.) Fast Erase operation: 100 mS (max.) 16 even pages with 4K bytes Any individual page can be erased Optional 8K byte Top/Bottom Boot Block with lockout protection
Active current: 10 mA (typ.) Standby current: 15 A (typ.)
End of program detection
Read access time: 70/90 nS
Software method: Toggle bit/Data polling
TTL compatible I/O JEDEC standard byte-wide pinouts Available packages: 32-pin PLCC and
Hardware protection:
32-pin STSOP (8 x 14 mm)
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Publication Release Date: July 9, 2002 Revision ……
