Hi All,
I need a SD memory card controller chip, I also need to porting some MCU code, and need UART interface, low speed as 9.6K is enough.
Best regards, Boki.
- posted
17 years ago
Need a SD (memory card) controller chip.
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- posted
17 years ago
Do you mean something like this?
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Marc
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- posted
17 years ago
Boki =BCg=B9D=A1G
Dear All,
Due to the cost, I hope it only support SD ( no need to suppor others, ex: CF, MMC,...).
Best reagrds, Boki.
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- posted
17 years ago
SD cards must support the SPI interface. So any microcontroller with a built in SPI interface can control an SD card.
You can download the MMC card spec from SanDisk to get the details.
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- posted
17 years ago
The MMC spec is not the same as the SD spec, unfortunately. One can get a copy of the minimal SD spec for free but not the whole spec without joining the club. The entire spec is necessary to fully implement SD.
I am using a device from Winbond that supports SD and SDIO, but I had to sign NDAs to get the source. I have no doubt you will run into the same issue.
Cheers
PeteS
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- posted
17 years ago
Have a look at
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and related:
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-- Regards, Adrian Jansen adrianjansen at internode dot on dot net Design Engineer J & K Micro Systems Microcomputer solutions for industrial control Note reply address is invalid, convert address above to machine form.
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- posted
17 years ago
I heard that:
- SD is a superset of MMC, thus MMC code can use SD cards
- The 4-bit SD interface isn't a big deal
- Only the 'secure' aspects are closely guarded
- The security has been cracked, so it isn't secure
- Almost nobody uses the security features
So I presume one can get code to use SD cards without the complete specification.
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- posted
17 years ago
PeteS =BCg=B9D=A1G
built
Thanks a lot, I think NDA is not an issue. :)
Best regards, Boki.
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- posted
17 years ago
I dont think he will run into the same issues , nor will i .
The market will be free , or it will die , take your pick ....
Patents hold society hostage by those who only copyied others , but got to patent office first ! Can You say Bill Gates !
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- posted
17 years ago
Did you find an SD Card Host controller? I am looking for one and could use some help. The dosonchip looks interesting but i think would be too slow. I need a concurrent write of 1Mbytes/s and a read of 2Mbytes/s.
A USB to SD card bridge would be OK. or a SD Card Host controller with a A/D bus.
I need to keep the cost