W39V040AP中文資料華邦電子數(shù)據(jù)手冊(cè)PDF規(guī)格書(shū)

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