What's different between Nor and NAND flash?

[realtek]

Q1.What different between Nor and NAND flash(architecture , advantage....)?

Q2.When 1nte1 support NOR, BUT SUNSONG SUPPORT NAND?

Q3.Any EBOOK / Paper/ Document mention about this issue?
tks in advantage!

 

[rprince006]

Re: NOR vs NAND FLASH ?

Hi,

Nor Flash is common ground, and good for both the code and data storage.
Nand Flash is good for data storage (file system) market.

You may search in Google for some technical papers for details.

 

[jackjtchan]

Re: NOR vs NAND FLASH ?

NAND: mainly for data storage
NOR: mainly for code storage

 

[Willt]

Re: NOR vs NAND FLASH ?

Hi friend,

a. What are the difference between Nor and NAND flash (architecture , advantage....)?

NOR flash
- core cells connected in parallel (common ground)
- adv. random access (good for code execution)
- adv. faster than NAND flash
- disadv. larger area than NAND flash with the same capacity

NAND flash
- core cells connected in series (normal 8 or 16 cells)
- adv. smaller than NOR flash with the same capacity (cos connected in series)
- disadv. slower than NOR flash
- disadv. sequential access (good for data storage but not code execution)

b. Market share rank in NOR flash:
1st Spansion
2nd Intel
3rd STM

Hope it helps ~

Will