器件名称: W49V002FAQ
功能描述: 256K X 8 CMOS FLASH MEMORY WITH FWH INTERFACE
文件大小: 300.14KB 共32页
简 介: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
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
Fast program operation: Byte-by-byte programming: 50 S (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
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