M58PR512LE datasheet(65/119 Pages) STMICROELECTRONICS

부품명	M58PR512LE

상세설명	256-Mbit, 512-Mbit or 1-Gbit (횞 16, multiple bank, multilevel, burst) 1.8 V supply Flash memories

PDF	119 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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65 / 119 page

M58PR256LE, M58PR512LE, M58PR001LE

Block locking

65/119

Table 22.

Lock status

Current protection status(1)

(WP, DQ1, DQ0)

The lock status is defined by the write protect pin and by DQ1 (‘1’ for a locked-down block) and DQ0 (‘1’ for

a locked block) as read in the Read Electronic Signature command with A1 = VIH and A0 = VIL.

Next protection status(1)

(WP, DQ1, DQ0)

Current

state

Program/erase

allowed

After Block

Lock

command

After Block

Unlock

command

After Block

Lock-down

command

After WP

transition

1,0,0

yes

1,0,1

1,0,0

1,1,1

0,0,0

1,0,1(2)

All blocks are locked at power-up, so the default configuration is 001 or 101 according to WP status.

1,0,1

1,0,0

1,1,1

0,0,1

1,1,0

yes

1,1,1

1,1,0

1,1,1

0,1,1

1,1,1

1,1,0

1,1,1

0,1,1

0,0,0

yes

0,0,1

0,0,0

0,1,1

1,0,0

0,0,1(2)

0,0,1

0,0,0

0,1,1

1,0,1

0,1,1

1,1,1 or 1,1,0(3)

A WP transition to VIH on a locked block will restore the previous DQ0 value, giving a 111 or 110.

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