microSD aka TransFlash FLASH Memory SD Cards

microSD is SD in a SanDisk^{^} "TransFlash" form factor. Commonly used in cell phones, handheld GPS, iPod clones, and expandable USB FLASH memory drives.

About the size of a fingernail: 15 mm x 11 mm x 1 mm or 0.6" x 0.433" x 0.04" - Don't sneeze.

The pins are:

DAT2
DAT3,/CS
CMD,SDI
Vdd
CLK,SCK
GND
DAT0,SDO
DAT1

The DAT1-3 lines start as inputs and become I/O after the SET_BUS_WIDTH command.

microSD supports the MMC serial and SD nibble parallel modes

Can be connected to a standard SD card slot via a mechanical adapter:

See also:

http://www.transcendusa.com/Products/ModDetail.asp?LangNo=0&ModNo=96 MicroSD cards with data sheets available.
+
http://en.wikipedia.org/wiki/MicroSD
http://www.molex.com/cgi-bin/bv/molex/jsp/products/datasheet.jsp?channel=Products&print=y&productid=99268 Molex 1.10mm (.043") Pitch TransFlash Memory Card Connector, Push-Push Type+
http://www.mouser.com/search/ProductDetail.aspx?R=500873-0801virtualkey53810000virtualkey538-500873-0801 TransFlash Memory Card Connector RA, SMT, Push-Push type by Molex^{^} are in stock at Mouser for ~$2.50 each+
http://jae-connector.com/en/general_en.cfm?series_code=ST2&contact_number=&s_height=&l_con=&r_con= JAE Low profile/ SDATM "ST2 Series" for microSDTM Memory Card
http://www.mouser.com/search/ProductDetail.aspx?R=SV1R007V1Avirtualkey65610000virtualkey656-SV1R007V1A MICROSD CARD SOCKET by JAE Electronics^{^} are non-stock at Mouser for ~ $5 each.+
http://www.opencircuits.com/MicroSD/Transflash_Socket A component file for the Molex push-push socket in Eagle PCB CAD format
http://www.howardforums.com/archive/topic/1023327-1.html A bug in some third party 1GB microSD cards can prevent formating with a 16KB cluster size. Use a 32KB cluster via XP command prompt: FORMAT E:/FS:FAT /A:32k where E: is the driver letter.

file: /Techref/mem/flash/microsd.htm, 4KB, , updated: 2007/5/30 22:49, local time: 2012/2/8 16:56, owner: JMN-EFP-786,

^{38.107.179.232:LOG IN}

©2012 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?

Please DO link to this page! Digg it! / MAKE! /

<A HREF="http://www.ecomorder.com/techref/mem/flash/microsd.htm"> microSD cards</A>

Did you find what you needed?

"No. I'm looking for: "
"No. Take me to the search page."
"No. Take me to the top so I can drill down by catagory"
"No. I'm willing to pay for help, please refer me to a qualified consultant"
"No. But I'm interested. me at when this page is expanded."

Make payments with PayPal - it's fast, free and secure!
Thank you for supporting this site.

Robotics nuts!

Check out http://users.frii.com/dlc/robotics/projects/botproj.htm from Dennis Clark. This guy ROCKS! He has made (and sells but also releases code, docs, etc...) for a number of cool little robotic modules including whiskers, IR proximity detect and remote control, Sonar proximity detect, PWM, Servo, compass. Most of these use the little PIC 12C508 controller which costs basically nothing and is soooo tiny.
The 4 servos, 2400 baud serial servo controller is a wonder of magic and he sells the programmed chip for $8. Wow!