W29C020-12 WINBOND [Winbond], W29C020-12 Datasheet

W29C020-12

Manufacturer Part Number

W29C020-12

Description

256K X 8 CMOS FLASH MEMORY

Manufacturer

WINBOND [Winbond]

Datasheet

1.W29C020-12.pdf (21 pages)

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W29C020-12

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W29C020-12B

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GENERAL DESCRIPTION

The W29C020 is a 2-megabit, 5-volt only CMOS flash memory organized as 256K

device can be written (erased and programmed) in-system with a standard 5V power supply. A 12-volt

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

Fast chip-erase operation: 50 mS

Two 8 KB boot blocks with lockout

Typical page write (erase/program) cycles:

100/1K/10K

Read access time: 70/90/120 nS

Ten-year data retention

128 bytes per page

Page write (erase/program) cycle: 10 mS

(max.)

Effective byte-write (erase/program) cycle

time: 39 S

Optional software-protected data write

is not required. The unique cell architecture of the W29C020 results in fast write (erase/program)

256K

- 1 -

8 CMOS FLASH MEMORY

Software and hardware data protection

Low power consumption

Automatic write (erase/program) timing with

internal V

End of write (erase/program) detection

Latched address and data

All inputs and outputs directly TTL compatible

JEDEC standard byte-wide pinouts

Available packages: 32-pin 600 mil DIP, 450 mil

SOP, TSOP, and 32-pin PLCC

Active current: 25 mA (typ.)

Standby current: 20 A (typ.)

Toggle bit

Data polling

Publication Release Date: February 1998

generation

W29C020

8 bits. The

Revision A3

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