256K X 8 CMOS FLASH MEMORY
GENERAL DESCRIPTION
The W49F002U is a 2-megabit, 5-volt only CMOS flash memory organized as 256K ´ 8 bits. The device can be programmed and erased in-system with a standard 5V power supply. A 12-volt VPP is not required. The unique cell architecture of the W49F002U results in fast program/erase operations with extremely low current consumption compared to other comparable 5-volt flash memory products. The device can also be programmed and erased using standard EPROM programmers.
FEATURES
· Single 5-volt operations:
- 5-volt Read
- 5-volt Erase
- 5-volt Program
· Fast Program operation:
- Byte-by-Byte programming: 35 mS typ.
· Fast Erase operation: 100 mS typ.
· Fast Read access time: 70/90/120 nS
· Endurance: 10K cycles typ.
· Ten-year data retention
· Hardware data protection
· One 16K byte Boot Block with Lockout protection
· Two 8K byte Parameter Blocks
· Two Main Memory Blocks 96K, 128K Bytes
· 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
· JEDEC standard byte-wide pinouts
· Available packages: 32-pin DIP and 32-pin TSOP and 32-pin-PLCC