M28W160ECT70ZB6U 参数 Datasheet PDF下载

M28W160ECT, M28W160ECB

Table 8. Block Lock Status

Item

Block Lock Configuration

Block is Unlocked

xx002

Block is Locked

Block is Locked-Down

DQ0=1

DQ1=1

Address

Data

LOCK

DQ0=0

Table 9. Protection Status

Current

Protection Status

(1)

(WP, DQ1, DQ0)

Current State

1,0,0

1,0,1

(2)

1,1,0

1,1,1

0,0,0

0,0,1

(2)

0,1,1

Program/Erase

Allowed

yes

no

yes

no

yes

no

no

After

Block Lock

Command

1,0,1

1,0,1

1,1,1

1,1,1

0,0,1

0,0,1

0,1,1

Next Protection Status

(1)

(WP, DQ1, DQ0)

After

Block Unlock

Command

1,0,0

1,0,0

1,1,0

1,1,0

0,0,0

0,0,0

0,1,1

After Block

Lock-Down

Command

1,1,1

1,1,1

1,1,1

1,1,1

0,1,1

0,1,1

0,1,1

After

WP transition

0,0,0

0,0,1

0,1,1

0,1,1

1,0,0

1,0,1

1,1,1 or 1,1,0

(3)

Note: 1. The protection 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 = V

IH

and A0 = V

IL

.

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

3. A WP transition to V

IH

on a locked block will restore the previous DQ0 value, giving a 111 or 110.

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