W29C040 datasheet(1/20 Pages) WINBOND

Part #	W29C040

Description	512K X 8 CMOS FLASH MEMORY

PDF	20 Pages

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Manufacturer	WINBOND [Winbond]

Direct Link	http://www.winbond.com

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W29C040

512K

× 8 CMOS FLASH MEMORY

Publication Release Date: May 1999

- 1 -

Revision A5

GENERAL DESCRIPTION

The W29C040 is a 4-megabit, 5-volt only CMOS page mode EEPROM organized as 512K

× 8 bits.

The device can be written (erased and programmed) in-system with a standard 5V power supply. A

12-volt VPP is not required. The unique cell architecture of the W29C040 results in fast write (erase/

program) operations with extremely low current consumption compared to other comparable 5-volt

flash memory products. The device can also be written (erased and programmed) by using standard

EPROM programmers.

FEATURES

• Single 5-volt write (erase and program)

operations

• Fast page-write operations

− 256 bytes per page

− Page write (erase/program) cycle: 5 mS

(typ.)

− Effective byte-write (erase/program) cycle

time: 19.5

µS

− Optional software-protected data write

• Fast chip-erase operation: 50 mS

• Two 16 KB boot blocks with lockout

• Typical page write (erase/program) cycles:

1K/10K (typ.)

• Read access time: 90/120 nS

• Ten-year data retention

• Software and hardware data protection

• Low power consumption

− Active current: 25 mA (typ.)

− Standby current: 20 µA (typ.)

• Automatic write (erase/program) timing with

internal VPP generation

• End of write (erase/program) detection

− Toggle bit

− Data polling

• Latched address and data

• All inputs and outputs directly TTL compatible

• JEDEC standard byte-wide pinouts

• Available packages: TSOP and PLCC

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W29C040 Datasheet(PDF) 1 Page - Winbond

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