LH28F400SUB-Z0 Просмотр технического описания (PDF) - Sharp Electronics

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LH28F400SUB-Z0

4M (512K × 8, 256K × 16) Flash Memory

Sharp Electronics 

4M (512K × 8, 256K × 16) Flash Memory

LH28F400SUB-Z0

START

START

RESET WP

(NOTE 1)

RESET WP

(NOTE 1)

ERASE BLOCK

(NOTE 2)

SET WP

(NOTE 3)

WRITE NEW DATA

TO BLOCK

(NOTE 4)

RELOCK BLOCK

(NOTE 5)

WRITE MORE

DATA TO BLOCK

(NOTE 4)

SET WP

(NOTE 3)

OPERATION

COMPLETE

FLOW TO ADD DATA

OPERATION

COMPLETE

FLOW TO REWRITE DATA

NOTES:

1. Use Reset-Write-Protect flowchart. Enable Write/Erase operation to all blocks.

2. Use Block-Erase flowchart. Erasing a block clears any previously established lockout for that block.

3. Use Set-Write-Protect flowchart. This step re-implements protection to locked blocks.

4. Use Word/Byte-Write or 2-Byte-Write flowchart sequences to write data.

5. Use Block-Lock flowchart to write lock bit if desired.

Figure 8. Updating Data in a Locked Block

28F400SUB-8

13

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