W29C020P-90A

更新时间： 2024-11-19 22:41:27

品牌	Logo	应用领域
华邦 - WINBOND		/
页数	文件大小	规格书
21页	267K
描述
256K X 8 CMOS FLASH MEMORY

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数据手册

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W29C020P-90A 数据手册

W29C020

256K ´ 8 CMOS FLASH MEMORY

GENERAL DESCRIPTION

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

· Software and hardware data protection

· Low power consumption

· Fast page-write operations

- 128 bytes per page

- Active current: 25 mA (typ.)

- Standby current: 20 mA (typ.)

- Page write (erase/program) cycle: 10 mS

(max.)

· Automatic write (erase/program) timing with

internal VPP generation

- Effective byte-write (erase/program) cycle

time: 39 mS

· End of write (erase/program) detection

- Toggle bit

- Optional software-protected data write

· Fast chip-erase operation: 50 mS

· Two 8 KB boot blocks with lockout

- Data polling

· Latched address and data

· All inputs and outputs directly TTL compatible

· JEDEC standard byte-wide pinouts

· Typical page write (erase/program) cycles:

100/1K/10K

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

SOP, TSOP, and 32-pin PLCC

· Read access time: 70/90/120 nS

· Ten-year data retention

Publication Release Date: February 1998

- 1 -

Revision A3

12 3 4 5 6 7...21

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