EB037 MMC Card Reader e-block, Suitable Chips

For E-blocks user to discuss using E-blocks and programming for them.

Moderators: Benj, Mods

Post Reply
Mark
Posts: 209
Joined: Thu Oct 19, 2006 11:46 am
Location: Bakewell, UK
Has thanked: 20 times
Been thanked: 16 times
Contact:

EB037 MMC Card Reader e-block, Suitable Chips

Post by Mark »

The MMC e-block has two constraits with flowcode and the multiprogrammer:

1) All 16 Series chips are out and many 18 also, such as 18F2455 on memory grounds.
2) Many 18 series chips split SDI/SDO accross two ports so are unsuitable for harware SPI.

Any suggestion of a chip than has been used successfully used on either the Multiprogrammer or HP-488 boards directly with flowcode?

Thanks.
Go with the Flow.

User avatar
JohnCrow
Valued Contributor
Valued Contributor
Posts: 1367
Joined: Wed Sep 19, 2007 1:21 pm
Location: Lincolnshire
Has thanked: 364 times
Been thanked: 716 times
Contact:

Re: EB037 MMC Card Reader e-block, Suitable Chips

Post by JohnCrow »

Hi Mark

Have a look at my Temp Logger Project, I use the MMC card reader on that

http://www.matrixmultimedia.com/mmforum ... emperature

I tried both the 18F4550 and the 18F4455

Did initally find the E-block would only work with a class 2 SD card, after chatting with Benj I added a delay to the custom component and that got it to work with the class 4 sd card.
Not tried using it on the FC4.5 so dont know if the mod is still needed.

http://www.matrixmultimedia.com/mmforum ... mmc#p23448
1 in 10 people understand binary, the other one doesn't !

Post Reply