MuxOneNAND2G(KFM2G16Q2A-DEBx)

FLASH MEMORY

MuxOneNAND4G(KFN4G16Q2A-DEBx)

2.7.2 lnternal Memory Spare Area Assignment

The figure below shows the assignment of the spare area in the Internal Memory NAND Array.

Main area Main area Main area Main area

256W 256W 256W 256W

Spare Spare Spare Spare area area area area 8W 8W 8W 8W

Note1

Note1

Note2

Note2

Note2

Note3

Note3

Note3

ECCm

ECCm

ECCm

ECCs

ECCs

 

 

 

 

 

 

 

 

1st

2nd

3rd

1st

2nd

Note3 Note4 Note4

 

 

 

 

 

 

 

 

 

 

LSB

MSB

 

 

 

 

 

 

 

LSB

MSB

LSB MSB

LSB

MSB LSB MSB LSB MSB

LSB MSB

LSB MSB

LSB MSB

{ { { { { { { {

 

 

1st W

2nd W

3rd W

4th W

5th W

6th W

7th W

8th W

Spare Area Assignment in the Internal Memory NAND Array Information

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Word

 

Byte

 

Note

 

 

Description

 

 

1

 

 

LSB

 

 

1

Invalid Block information in 1st and 2nd page of an invalid block

 

 

 

 

 

 

 

 

 

MSB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

LSB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MSB

 

 

2

Managed by internal ECC logic for Logical Sector Number data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

LSB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MSB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

LSB

 

 

3

Reserved for future use

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MSB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LSB

 

 

 

Dedicated to internal ECC logic. Read Only. (Note 5)

 

 

 

 

 

 

 

ECCm 1st for main area data

 

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MSB

 

 

 

Dedicated to internal ECC logic. Read Only. (Note 5)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ECCm 2nd for main area data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LSB

 

 

 

Dedicated to internal ECC logic. Read Only. (Note 5)

 

 

 

 

 

 

 

ECCm 3rd for main area data

 

 

 

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MSB

 

 

 

Dedicated to internal ECC logic. Read Only. (Note 5)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ECCs 1st for 2nd word of spare area data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LSB

 

 

 

Dedicated to internal ECC logic. Read Only. (Note 5)

 

7

 

 

 

 

 

ECCs 2nd for 3rd word of spare area data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MSB

 

 

3

Reserved for future use

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

 

 

LSB

 

 

4

 

Available to the user (Note 6)

 

 

 

 

 

 

 

 

 

 

MSB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE 5 :

 

 

 

 

 

 

 

 

 

 

In case of ECC Bypass Mode, user can program in ECC Area.

 

 

 

 

NOTE 6 :

 

 

 

 

 

 

 

 

 

 

For all blocks, 8th word is available to the user.

 

 

 

 

 

 

However,in case of OTP Block, 8th word of sector 0, page 0 is reserved as OTP Locking Bit area.

 

 

 

Therefore, in case of OTP Block, user usage on this area is prohibited.

 

 

 

 

- 48 -

Page 48
Image 48
Samsung KFM2G16Q2A, KFN4G16Q2A warranty Lnternal Memory Spare Area Assignment, Word Byte