W39L040P-90B
| Model | W39L040P-90B |
| Description | 512 K X 8 CMOS FLASH MEMORY |
| PDF file | Total 27 pages (File size: 333K) |
| Chip Manufacturer | WINBOND |
W39L040
512K
×
8 CMOS FLASH MEMORY
1. GENERAL DESCRIPTION
The W39L040 is a 4Mbit, 3.3-volt only CMOS flash memory organized as 512K
×
8 bits. For flexible
erase capability, the 4Mbits of data are divided into 8 uniform sectors of 64 Kbytes, which are
composed of 16 smaller even pages with 4 Kbytes. The byte-wide (× 8) data appears on DQ7
−
DQ0.
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 of the W39L040 results in fast program/erase
operations with extremely low current consumption (compared to other comparable 3.3-volt flash
memory products). The device can also be programmed and erased by using standard EPROM
programmers.
2. FEATURES
•
Single 3.3-volt operations
−
3.3-volt Read
−
3.3-volt Erase
−
3.3-volt Program
•
Hardware protection:
−
Optional 16K byte or 64K byte Top/Bottom
Boot Block with lockout protection
•
•
Fast Program operation:
−
Byte-by-Byte programming: 50
µS
(max.)
Fast Erase operation:
−
Chip Erase cycle time: 100 mS (max.)
−
Sector Erase cycle time: 25 mS (max.)
−
Page Erase cycle time: 25 mS (max.)
Flexible 4K-page size can be used as
Parameter Blocks
•
Typical program/erase cycles: 1K/10K
•
Twenty-year data retention
•
Low power consumption
•
−
Active current: 10 mA (typ.)
−
Standby current: 2
µA
(typ.)
•
End of program detection
•
Read access time: 70/90 nS
•
•
8 Even sectors with 64K bytes each, which is
composed of 16 flexible pages with 4K bytes
Any individual sector or page can be erased
−
Software method: Toggle bit/Data polling
•
TTL compatible I/O
•
JEDEC standard byte-wide pinouts
•
Available packages: 32L PLCC, 32L TSOP (8 x
20 mm) and 32L STSOP (8 x 14 mm)
-1-
Publication Release Date: February 10, 2003
Revision A3
