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W39L040A Datasheet, PDF (3/26 Pages) Winbond – 512K × 8 CMOS FLASH MEMORY | |||
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W39L040A
1. GENERAL DESCRIPTION
The W39L040A is a 4Mbit, 3V/3.3V CMOS flash memory organized as 512K Ã 8 bits. For flexible
erase capability, the 4Mbits of data are divided into 8 uniform sectors of 64 Kbytes. The byte-wide (Ã
8) data appears on DQ7 â DQ0. The device can be programmed and erased in-system with a
standard 3.3V power supply. A 12-volt VPP is not required. The unique cell architecture of the
W39L040A 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
⢠3V/3.3-Volt Read/Erase/Program Operations
â 3.0 ~ 3.6V for 70nS
â 2.7 ~ 3.6V for 90nS
⢠Fast Program operation:
â Byte-by-Byte programming: 9 μS (typ.)
⢠Fast Erase operation:
â Chip Erase cycle time: 6 S (typ.)
â Sector Erase cycle time: 0.7 S (typ.)
⢠Read access time: 70/90 nS
⢠8 Even sectors with 64K bytes
⢠Any individual sector can be erased
⢠Typical program/erase cycles: 10K
⢠Twenty-year data retention
⢠Low power consumption
â Active read current: 7 mA at 5MHz (typ.)
â Active program/erase current: 15 mA at
5MHz (typ.)
â Standby current: 0.2 μA (typ.)
⢠End of program detection
â Software method: Toggle bit/#Data polling
⢠JEDEC standard byte-wide pinouts
⢠Available packages: 32-pin PLCC Lead free,
32-pin STSOP (8 x 14 mm) Lead free, 32-pin
PDIP and 32-pin TSOP (8 x 20 mm)
Publication Release Date: April 14, 2005
-3-
Revision A3
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