器件名称: W49V002A
功能描述: 256K x 8 CMOS FLASH MEMORY WITH LPC INTERFACE
文件大小: 290.12KB 共32页
简 介:Preliminary W49V002A 256K x 8 CMOS FLASH MEMORY WITH LPC INTERFACE
GENERAL DESCRIPTION The W49V002A 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 W49V002A results in fast program/erase operations with extremely low current consumption. This device can operate at two modes, Programmer bus interface mode and LPC bus interface mode. As in the Programmer interface mode, it acts like the traditional flash but with a multiplexed address inputs. But in the LPC interface mode, this device complies with the Intel LPC specification 1.0. The device can also be programmed and erased using standard EPROM programmers.
FEATURES
Single 3.3-volt operations:
bytes, 64K bytes, 64K bytes each)
Low power consumption
3.3-volt Read 3.3-volt Erase 3.3-volt Program
Fast Program operation:
Active current: 25 mA (typ.) Standby current: 20 A (typ.)
Automatic program and erase timing with internal VPP generation End of program or erase detection
Byte-by-Byte programming: 50 S (typ.)
Fast Erase operation: 150 mS (typ.) Endurance: 10K cycles (typ.) Twenty-year data retention Hardware data protection
Toggle bit Data polling
Latched address and data TTL compatible I/O Available packages: 32L PLCC and 32L
#TBL & #WP serve as hardware protection
One 16K bytes Boot Block with lockout
protection
Two 8K ……
