Parallel Flash

Part No.	W39V040FB
Datasheet	W39V040FB.pdf
Description	The W39V040FB is a 4-megabit, 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. The device can be programmed and erased in-system with a standard 3.3V power supply. A 12-volt VPP is required for accelerated program. The unique cell architecture of the W39V040FB results in fast program/erase operations with extremely low current consumption. This device can operate at two modes, Programmer bus interface mode, Firmware Hub (FWH) bus interface mode. As in the Programmer interface mode, it acts like the traditional flash but with a multiplexed address inputs. But in the FWH interface mode, this device complies with the Intel FWH specification. The device can also be programmed and erased using standard EPROM programmers
Features	Single 3.3-volt Read/Erase/ Program operations Read access time:70ns Endurance: 10K cycles (typ) 8 Even sectors with 64K bytes each, Hardware protection: 64K byte Top Boot Block with lockout protection/ #TBL & #WP support the whole chip hardware protection Automatic program and erase timing with internal VPP operation twenty-year data retentions TTL compatible I/O JEDEC standard byte-wide pinouts
Diagram
Package	32L PLCC, 32L STSOP; 32L PLCC Lead free, 32L STSOP Lead free
Other Files	N/A
Development Tools	N/A
Others	N/A