W49V002AP中文資料華邦電子數(shù)據(jù)手冊(cè)PDF規(guī)格書(shū)

GENERAL DESCRIPTION

The W49V002A is a 2 -megabit, 3.3-volt only CMOS flash memory organized as 256K x 8 bits. The device can be programmed and erased in-system with a standard 3.3V power supply. A 12-volt V PP is not required. The unique cell architecture ofthe W49V002A results in fast program/erase operations with extremely low current consumption.

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)

· Lowpower 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