Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

SD CARD SPI Schematic

Status
Not open for further replies.

leomecma

Full Member level 5
Joined
Jun 17, 2005
Messages
242
Helped
14
Reputation
28
Reaction score
1
Trophy points
1,298
Location
Brasil
Activity points
3,917
sd card schematic

Anyone has an schematic for interface a SDCARD to a 3V3 microcontroller. I found some, and some people use pullup resistors, others not. Is it necessary? If is true, in what pin?

thk,

leomecma
 

scarecrow_here

Newbie level 4
Joined
Mar 14, 2006
Messages
6
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,332
sd card spi

Check Microchip website. There are many 3V3 MCUs support SPI interface. There is three wire connection between the MCU and SD card and no resisters needed.
 

chandravel

Newbie level 1
Joined
Mar 11, 2008
Messages
1
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,284
sd card schematics

hi to all,
Pull up resistance is must in spi communication. So u put 10k in the Data in and data out Line
Thanks
chandravel
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top