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How many flash chips are in a 32GByte SD card?

Posted: April 30th, 2013, 13:51
by rrr12
My understanding is that the largest flash chips available are 256Mbit (32MByte). To build a 32GByte sd card would require 1000 32MByte flash chips. I must be missing somwthing.....no way there are 1000 flash chips in that little package ;-)

Can someone set me straight?

thanks!

Re: How many flash chips are in a 32GByte SD card?

Posted: April 30th, 2013, 14:01
by lcoughey
1 or 2, usually.

Re: How many flash chips are in a 32GByte SD card?

Posted: April 30th, 2013, 15:36
by fzabkar
Micron has 128Gbit and 256Gbit NAND Flash chips:
http://cse325.floorsoup.com/refdocs/hw_ ... _flash.pdf

Re: How many flash chips are in a 32GByte SD card?

Posted: April 30th, 2013, 15:43
by rrr12
Thanks! That explains it.

Re: How many flash chips are in a 32GByte SD card?

Posted: May 1st, 2013, 8:57
by Cleanroom
most likely it is a Monolith chip

Re: How many flash chips are in a 32GByte SD card?

Posted: May 1st, 2013, 9:02
by lcoughey
Cleanroom wrote:most likely it is a Monolith chip

Party pooper!

Re: How many flash chips are in a 32GByte SD card?

Posted: May 1st, 2013, 12:46
by pcimage
Cleanroom wrote:most likely it is a Monolith chip


From the spec sheet ..

Package
– 52-pad LGA
– 48-pin TSOP
– 100-ball BGA
– 132-ball BGA

Re: How many flash chips are in a 32GByte SD card?

Posted: May 6th, 2013, 12:31
by Cleanroom
pcimage wrote:
Cleanroom wrote:most likely it is a Monolith chip


From the spec sheet ..

Package
– 52-pad LGA
– 48-pin TSOP
– 100-ball BGA
– 132-ball BGA



Had to go and get technical to prove me wrong :)

Re: How many flash chips are in a 32GByte SD card?

Posted: May 6th, 2013, 14:38
by pcimage
Cleanroom wrote:
pcimage wrote:
Cleanroom wrote:most likely it is a Monolith chip


From the spec sheet ..

Package
– 52-pad LGA
– 48-pin TSOP
– 100-ball BGA
– 132-ball BGA



Had to go and get technical to prove me wrong :)



Ha ha :-)