W39V040AP Datasheet PDF - Winbond Electronics

●GENERAL DESCRIPTION

●The W39V040A is a 4-megabit, 3.3-volt only CMOS flash memory organized as 512K ×8 bits. For flexible erase capability, the 4Mbitsof data are divided into 8 uniform sectors of 64 Kbytes, which are composed of 16 smaller even pages with 4 Kbytes. The device can be programmed and erased in-system with a standard 3.3V power supply.

●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: 35 µS (typ.)

●• Fast Erase Operation:

●−Chip erase 100 mS (max.)

●−Sector erase 25 mS (max.)

●−Page erase 25 mS (max.)

●• Fast Read access time: Tkq 11 nS

●• Endurance: 10K cycles (typ.)

●• Twenty-year data retention

●• 8 Even sectors with 64K bytes each, which is composed of 16 flexible pages with 4K bytes

●• Any individual sector or page can be erased

●•Hardware protection:

●−Optional 16K byte or 64K byte Top Boot Block with lockout protection

●−#TBL & #WP support the whole chip hardware protection

●•Flexible 4K-page size can be used as Parameter Blocks

●• Low power consumption

●−Active current: 12.5 mA (typ. for LPC mode)

●• Automatic program and erase timing with internal VPPgeneration

●• End of program or erase detection

●−Toggle bit

●−Data polling

●• Latched address and data

●• TTL compatible I/O

●• Available packages: 32L PLCC, 32L STSOP