342587 2587 - Breakout Board for microSD Card with 3.3V Regulator and Level Shifters

2587 - Breakout Board for microSD Card with 3.3V Regulator and Level Shifters

This compact board breaks out the pins of a microSD card connector necessary to interface with the card through SPI (Serial Peripheral Interface), and it can be directly integrated into 5 V systems thanks to its on board 3.3 V regulator and level shifting circuity.
Categories
Prices are VAT included
€5.48 Price
€4.49 + VAT

 

Details

This compact board breaks out the pins of a microSD card connector necessary to interface with the card through SPI (Serial Peripheral Interface), and it can be directly integrated into 5 V systems thanks to its on board 3.3 V regulator and level shifting circuity. The 0.1″ pin spacing allows compatibility with standard perfboards, solderless breadboards, and 0.1" connectors.

 
This carrier board makes it easy to interface a microSD memory card (originally known as TransFlash) with an SPI-capable microcontroller, offering a convenient and inexpensive way to add gigabytes of non-volatile storage to an embedded project. It includes a 3.3 V regulator and level shifters on the four SPI lines, enabling direct integration into 5 V systems, and it provides access to the all of the connections through single 1×9 row of 0.1″-spaced through-holes. A breakaway 0.1″ male header strip is included, which can be soldered in to use the board with breadboards,perfboards, or 0.1″ female connectors, and the board has two mounting holes for #2 or M2 screws.
 

Since many microcontrollers have built-in SPI interfaces, most hobbyist projects communicate with Secure Digital cards in SPI bus mode; this is the only mode supported by this board. (The alternative SD bus mode is proprietary, and a license from the SD Association is required for access to the full specifications.) The pins on this board are labeled according to their functions in SPI mode.


PinDescription
EN Enables the 3.3 V regulator. This pin is pulled-up to VDD through a 100 kΩ resistor to enable the regulator by default.
CD Card detect. This pin is pulled up to VDD through a 100 kΩ resistor. When a card is inserted, it is high; when no card is inserted, it is shorted to ground.
CS Chip select (must be driven low to talk to the microSD card)
SCLK SPI clock
DO SPI data out (MISO) level shifted to 5 V
DI SPI data in (MOSI)
3V3 (OUT) Output from the 3.3 V regulator
GND Power and logic ground
VDD Supply voltage (5 V)

The board is powered by applying 5 V to the VDD pin, and all of the logic pins can be interfaced directly with 5 V systems thanks to integrated level shifters. The output of the integrated 3.3 V regulator can be accessed through the 3V3 pin, and the regulator can be disabled to turn off the microSD card and save power by driving the EN pin low.

By default, the EN and CD (Card Detect) pins are each pulled up to VDD through 100 kΩ resistors. However, there are cuttable traces on the underside of the board to allow you to disconnect each pull-up as desired. These traces are located between pairs of pads (labeled “EN” and “CD” on the board’s silkscreen) that can be bridged with solder to reconnect the pull-up resistor. Alternatively, the neighboring EN and CD pads of these surface-mount jumpers (highlighted in the picture below) can be connected if you want the regulator to automatically be enabled when the microSD card is inserted and disabled when it is removed.

The SD Association publishes a set of simplified specifications for SD cards containing information on interfacing with them. However, there are a number of ways to get started without understanding the specifications or writing your own code from scratch, since many microcontroller development platforms provide libraries for communicating with SD cards. For example:

  • The SD library for Arduino provides functions for accessing files and directories on an SD card. 

Specifications

Part. No. : 2587

Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.

Questions on 2587 - Breakout Board for microSD Card with 3.3V Regulator and Level Shifters

No questions asked yet

Register or Login to ask a question.
Register or Login to ask a question.
  1. microSD Sniffer

    709419 microSD Sniffer

    This is a unique board recommended by a SparkFun customer. When playing with microSD, you sometimes need to view what the SPIfalse
    Excl. Tax:
    €7.70
    Incl. Tax:
    €9.39
      Compare
  2. Breakout Board for microSD Transflash

    700544 Breakout Board for microSD Transflash

    Scheda di interfacciamento per schede microSD Transflash
    Excl. Tax:
    €3.57
    Incl. Tax:
    €4.36
      Compare
  3. MicroSD card breakout board+

    807966 MicroSD card breakout board+

    Not just a simple breakout board, this microSD adapter goes the extra mile - designed for ease of use.
    Excl. Tax:
    €6.94
    Incl. Tax:
    €8.47
      Compare
  4. SparkFun microSD Shield

    712761 SparkFun microSD Shield

    Communication with microSD cards is achieved over an SPI interface. The SCK, DI, and DO pins of the microSD socket are brokenfalse
    Excl. Tax:
    €11.54
    Incl. Tax:
    €14.08
      Compare
  5. SparkFun Level Shifting microSD Breakout

    713743 SparkFun Level Shifting microSD Breakout

    This is an evaluation board for the Silicon Laboratories Si4703 FM tuner chip. Beyond being a simple FM radio, the Si4703 is false
    Excl. Tax:
    €4.28
    Incl. Tax:
    €5.22
      Compare

Price Match



* Required Fields