W49V002FA Datasheet, PDF (1/32 Pages) Winbond – 256K X 8 CMOS FLASH MEMORY WITH FWH INTERFACE

W49V002FA
256K × 8 CMOS FLASH MEMORY
WITH FWH INTERFACE
GENERAL DESCRIPTION
The W49V002FA is a 2-megabit, 3.3-volt only CMOS flash memory organized as 256K × 8 bits. 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 W49V002FA results in fast program/erase operations
with extremely low current consumption. This device can operate at two modes, Programmer bus
interface mode and 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 operations:
− 3.3-volt Read
− 3.3-volt Erase
− 3.3-volt Program
• Fast program operation:
− Byte-by-byte programming: 50 µS (typ.)
• Fast erase operation: 150 mS (typ.)
• Fast read access time: Tkq 11 nS
• Endurance: 10K cycles (typ.)
• Twenty-year data retention
• Hardware data protection
− #TBL & #WP serve as hardware protection
• One 16K bytes Boot Block with lockout
protection
• Two 8K bytes Parameter Blocks
• Four main memory blocks (with 32K bytes, 64K
bytes, 64K bytes, 64K bytes each)
• Low power consumption
− Active current: 40 mA (typ. for FWH)
• 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
Publication Release Date: February 19, 2002
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Revision A2