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