Rainbow Electronics W49F002U User Manual
Rainbow Electronics Storage
W49F002U
256K
×
8 CMOS FLASH MEMORY
Publication Release Date: April 2000
- 1 -
Revision A2
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 V
PP
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
µ
S (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
µ
A (typ.)
•
Automatic program and erase timing with
internal
V
PP
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