K9K1208U0A-YIB0 データシートの表示（PDF） - Samsung

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K9K1208U0A-YIB0

64M x 8 Bit NAND Flash Memory

Samsung 

K9K1208U0A-YCB0, K9K1208U0A-YIB0

FLASH MEMORY

NAND Flash Technical Notes (Continued)

Erase Flow Chart

Read Flow Chart

Start

Start

Write 60h

Write 00h

Write Block Address

Write Address

Write D0h

Read Data

Read Status Register

ECC Generation

I/O 6 = 1 ?

No

or R/B = 1 ?

*

No

Erase Error

Yes

I/O 0 = 0 ?

Yes

Erase Completed

No

Reclaim the Error

Verify ECC

Yes

Page Read Completed

* : If erase operation results in an error, map out

the failing block and replace it with another block.

Block Replacement

Buffer

memory

error occurs

Page a

Block A

When the error happens with page "a" of Block "A", try

to write the data into another Block "B" from an exter-

nal buffer. Then, prevent further system access to

Block "A" (by creating a "invalid block" table or other

appropriate scheme.)

Block B

11

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