Pinouts of Connectors

MultiMedia card connector pinout

layout
schematic diagram
add this page to bookmarks

this memory cards are up to 1Gb and uses up to 20MHz 1-bit data bus

7 pin MM-card special connector pin-out & layout
7 pin MM-card special connector  at the card
The MultiMedia Card is a universal low cost data storage and communication media. It is designed to cover a wide area of applications as electronic toys, organizers , PDAs, cameras, smartphones, digital recorders, MP3 players, pagers, etc.

The MultiMedia Card communication is based on serial bus designed to operate in a low voltage range. For compatibility to existing controllers the cards may offer,in addition to the MultiMedia Card mode, an alternate communication protocol which is based on the SPI standard.

Pin Signal Description
1RSV NC Not connected or Always “1” (data 3?)
2CMD I/O Command/Response
3VSS1 S Supply Voltage Ground
4VDD S Supply Voltage
5CLK I Clock
6VSS2 S Supply Voltage Ground
7DAT0 I/O PP Data 0
  • CLK - with each cycle of this signal an one bit transfer on the command and data lines is done. The frequency may vary between 0-20MHz.
  • CMD - is a bidirectional command channel used for card initialization and data transfer commands.
  • DAT - is a bidirectional data channel. The DAT signal operates in push-pull mode. Only one card or the host is driving this signal at a time.

This information should be correct, but may be not. You can help us to improve this webpage!
You can confirm this document to be correct (be careful), or report an error in document (error may be described in the following webpage). Result of your submission will be used for calculating document status shown at the bottom of this page.
Pinouts.ru > Pinouts of different memory connectors >  Pinout of MultiMedia card connector and layout of 7 pin MM-card special connector

Source(s): MultiMedia Card System Summary and others
Document status: unknown
mark as erroneous!
mark as correct		 0 report(s)
Click one of this links to change document status.
[Discuss at the forum] [Back to index] [Add new pinout]
[Report an error or update]
This information is maintained by pinouts.ru team and provided as a guideline only.
Efforts have been made to ensure it is correct, but it is the responsibility of the user
to verify the data is correct for their application.
164 hits since February 12, 2005