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:

3.3-volt Read

3.3-volt Erase

3.3-volt Program

Fast Program operation: 

Byte-by-Byte programming: 50 mS (typ.)

Fast Erase operation: 150 mS (typ.)

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: 25 mA (typ.)

Standby current: 20 mA (typ.)

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 and 32L

STSOP

 

 

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