W39L040
W39L040 is 512K x 8 CMOS FLASH MEMORY manufactured by Winbond.
512K × 8 CMOS FLASH MEMORY
1. GENERAL DESCRIPTION
The W39L040 is a 4Mbit, 3.3-volt only CMOS flash memory organized as 512K × 8 bits. For flexible erase capability, the 4Mbits of data are divided into 8 uniform sectors of 64 Kbytes, which are posed of 16 smaller 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 W39L040 results in fast program/erase operations with extremely low current consumption (pared to other parable 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:
- Chip Erase cycle time: 100 m S (max.)
- Sector Erase...
