AT25DF321 데이터 시트보기 (PDF) - Atmel Corporation

부품명

상세내역

제조사

AT25DF321

32-megabit 2.7-volt Minimum SPI Serial Flash Memory

Atmel Corporation 

The tables below detail the various protection and locking states of the device.

Table 9-4. Software Protection Register States

Sector Protection Register

WP

n(1)

X

0

(Don't Care)

1

Sector

n(1)

Unprotected

Protected

Note: 1. “n” represents a sector number

Table 9-5. Hardware and Software Locking

WP SPRL

Locking

SPRL Change Allowed

Sector Protection Registers

0

0

Can be modified from 0 to 1

Unlocked and modifiable using the

Protect and Unprotect Sector

commands. Global Protect and

Unprotect can also be performed.

0

1

Hardware

Locked

Locked

Locked in current state. Protect and

Unprotect Sector commands will be

ignored. Global Protect and

Unprotect cannot be performed.

1

0

Can be modified from 0 to 1

Unlocked and modifiable using the

Protect and Unprotect Sector

commands. Global Protect and

Unprotect can also be performed.

1

1

Software

Locked

Can be modified from 1 to 0

Locked in current state. Protect and

Unprotect Sector commands will be

ignored. Global Protect and

Unprotect cannot be performed.

18 AT26DF321

3633F–DFLASH–5/7/08

Share Link: