W39V040FB Datasheet, PDF (3/33 Pages) Winbond – 512K X 8 CMOS FLASH MEMORY WITH FWH INTERFACE

W39V040FB
1. GENERAL 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.
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: 9 µS (typ.)
(VPP = 12V)
− Byte-by-Byte programming: 12 µS (typ.)
(VPP = Vcc)
• Fast Erase operation:
− Sector erase 0.6 Sec. (typ.)
• Fast Read access time: Tkq 11 nS
• Endurance: 10K cycles (typ.)
• Twenty-year data retention
• 8 Even sectors with 64K bytes
• Any individual sector can be erased
• Hardware protection:
− #TBL supports 64-Kbyte Boot Block
hardware protection
− #WP supports the whole chip except Boot
Block hardware protection
• Low power consumption
− Active current: 15 mA (typ. for FWH read
mode)
• Automatic program and erase timing with
internal VPP generation
• End of program or erase detection
− Toggle bit
− Data polling
• Latched address and data
• TTL compatible I/O
• Available packages: 32L PLCC, 32L STSOP
32L PLCC Lead free, 32L STSOP Lead free
Publication Release Date: April 14, 2005
-3-
Revision A3