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Electronic Schematics (alt.binaries.schematics.electronic) A place to show and share your electronics schematic drawings. |
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#1
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micro sd memory
hi, is any 8gb memory mucro sd avalible yet , is it possible to join
two microsd memory or not. thx for any info. |
#2
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micro sd memory
macarty wrote:
hi, is any 8gb memory mucro sd avalible yet , is it possible to join two microsd memory or not. thx for any info. What does "join two microsd" mean ?? Solder them together ?? donald |
#3
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micro sd memory
well don't know if will work or not .. don't know how the micro memory
works. On Sun, 19 Aug 2007 19:58:44 -0600, Donald wrote: macarty wrote: hi, is any 8gb memory mucro sd avalible yet , is it possible to join two microsd memory or not. thx for any info. What does "join two microsd" mean ?? Solder them together ?? donald |
#4
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micro sd memory
i did find about a 8gb and 16gb coming out next year but i was wonder
if was possible to join two micro sd memory or not. thanx for the link. On Sun, 19 Aug 2007 17:47:28 -0700, ChairmanOfTheBored wrote: On Sun, 19 Aug 2007 19:36:24 -0500, macarty wrote: hi, is any 8gb memory mucro sd avalible yet , is it possible to join two microsd memory or not. thx for any info. Are you talking about the Sony form factor product? As far as I know, the max is 4GB, and that is likely set in stone by the bus width of the architecture. However, after looking at wiki http://en.wikipedia.org/wiki/MicroSD, It appears that there are to be 6GB and 8GB releases. I don't know why you didn't do a simple google search, as it was like the second link listed. |
#5
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micro sd memory
macarty wrote:
i did find about a 8gb and 16gb coming out next year but i was wonder if was possible to join two micro sd memory or not. thanx for the link. I do not un derstand what you mean by "join". Two chips wired together or two die bonded together ?? Either way, each chip/die needs its own command/data interface. So, please help me understand what is "join". donald |
#6
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micro sd memory
hi, join as solder or use some kind board where i can use two micro sd
memory for my mp3 player or phone. like 4gb +4gb and i make 8gb storage. i know the samsung is coming out with a 8gband a 16gb and will be avalible early 2008 On Wed, 22 Aug 2007 20:51:36 -0600, Donald wrote: macarty wrote: i did find about a 8gb and 16gb coming out next year but i was wonder if was possible to join two micro sd memory or not. thanx for the link. I do not un derstand what you mean by "join". Two chips wired together or two die bonded together ?? Either way, each chip/die needs its own command/data interface. So, please help me understand what is "join". donald |
#7
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micro sd memory
macarty wrote:
hi, join as solder or use some kind board where i can use two micro sd memory for my mp3 player or phone. Ok, lets think this through. Two chips are now in the "same socket as one". A command is issued to the "one" chip. Which chip should respond ? Both will try to respond, both will be in the same address space. So, no you can _not_ solder two chips together and expect the device to know what you have done. I am not sure why this is not obvious to the casual observer. donald |
#8
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micro sd memory
Donald wrote:
macarty wrote: hi, join as solder or use some kind board where i can use two micro sd memory for my mp3 player or phone. Ok, lets think this through. Two chips are now in the "same socket as one". A command is issued to the "one" chip. Which chip should respond ? Both will try to respond, both will be in the same address space. So, no you can _not_ solder two chips together and expect the device to know what you have done. I am not sure why this is not obvious to the casual observer. donald It has to do with the dumbing down of society with regard to technical issues. Kids know how to use every new gadget in the wide spectrum of electronic devices, but know nothing about how any of it works. It is going to be interesting to see how the US survives the next 20 years. -Chuck |
#9
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micro sd memory
flipper wrote:
On Mon, 27 Aug 2007 19:47:27 -0600, Donald wrote: macarty wrote: hi, join as solder or use some kind board where i can use two micro sd memory for my mp3 player or phone. Ok, lets think this through. Two chips are now in the "same socket as one". A command is issued to the "one" chip. Which chip should respond ? Both will try to respond, both will be in the same address space. So, no you can _not_ solder two chips together and expect the device to know what you have done. I am not sure why this is not obvious to the casual observer. Are you basing the 'obviousness' of your conclusion on your intimate knowledge of the SD interface? Because, if so, that obviates the Yes, I would agree with your statement in principle. However, I did ask twice as to the nature of this "joining". And the Op did state above,"join as solder or use some kind board where i can use two micro sd memory for my mp3 player or phone." So, your assertion is not correct. The OP wants to push two devices into one slot. This is the obvious I was trying to get at. So, if the OP is still reading any of this, I hope he did learn something and will be willing to do a little more homework as to understanding this brave new world. donald Flipper: Good response, got me thinking on how to answer the OP. generic 'obviousness' of it and, in the generic, what he describes as the basic goal is done every day; it's called "chip select." And, in fact, SD supports SPI which, surprise, has chip select. Chip select is, of course, how multiple memory sticks are addressed in multiple slots in your everyday PC (and often on the memory stick itself) but, to his notion of 'combining', I have some very old boards that were once used to hold multiple sticks so they could be plugged into one PC slot. And, btw, there were chips made with inverted chip select lines so you could, literally, "solder two chips together" and have it work. That doesn't mean the idea will work with his MP3 player because, as the saying goes, the devil is in the details but it's by no means "obvious to the casual observer" that the general idea could never work. donald |
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