AT25DF021 datasheet(40/41 Pages) ATMEL

部件名	AT25DF021

功能描述	2-Megabit 2.3-volt or 2.7-volt Minimum SPI Serial Flash Memory

PDF	41 Pages

Scroll/Zoom	100%

制造商	ATMEL [ATMEL Corporation]

网页	http://www.atmel.com

标志

40 / 41 page

3677D–DFLASH–04/09

AT25DF021

18. Revision History

Revision Level – Release Date

History

A – February 2008

Initial release

B – May 2008

Changed Deep Power-Down current specifications

– Changed typical value from 4 µA to 8 µA

– Changed maximum value from 8 µA to 15 µA

Changed typical 64 KB Block Erase time from 400 ms to 450 ms

Changed typical Chip Erase time from 1.5s to 2.0s

Changed tVCSL time from 1.0 ms minimum to 1.2 ms minimum

Changed VPOR maximum from 2.5V to 2.2V

C – September 2008

Removed “Preliminary” designation from datasheet

Changed maximum clock frequency from 70 MHz to 66 MHz

Changed maximum Standby Current value from 35 µA to 50 µA

Changed Deep Power-Down Current specifications

– Changed typical value from 8 µA to 15 µA

– Changed maximum value from 15 µA to 25 µA

D – April 2009

Added System Considerations Section

AT25DF021 数据表(PDF) 40 Page - ATMEL Corporation