SparkFun Level Shifting microSD Breakout

Compact breakout board for a microSD card slot with on-board level shifting, enabling 5 V microcontrollers to interface with 3.3 V microSD cards via SPI. Adds mass storage to breadboard or embedded projects.

CSbreakout header
SPI chip select for microSD card.
Type · spi
DIbreakout header
SPI data input/MOSI to microSD card.
Type · spi
SCKbreakout header
SPI clock to microSD card.
Type · spi
DObreakout header
SPI data output/MISO from microSD card.
Type · spi
VCCbreakout header
Breakout supply input.
Type · power
GNDbreakout header
Ground return.
Type · ground

Pin	Position	Type	Function
CS	breakout header	spi	SPI chip select for microSD card.
DI	breakout header	spi	SPI data input/MOSI to microSD card.
SCK	breakout header	spi	SPI clock to microSD card.
DO	breakout header	spi	SPI data output/MISO from microSD card.
VCC	breakout header	power	Breakout supply input.
GND	breakout header	ground	Ground return.

Memory

38 other options

24LC32/25LC256 EEPROM, I2C FRAM, 64Mbit PSRAM, and microSD breakouts up to 64GB — matched to write frequency and data volume, not just interface.

View all 38

Related groups

4 groups

LED pixels

WS2812/SK6812 NeoPixel strips, rings and Jewels, APA102 DotStar pixels, and plain analog RGB strips — each matched to its protocol and host, not just its connector.

Components · Addressable LEDs · 176 parts

Bare ICs

74HC logic gates, MCP3008/MCP23017 ADCs and expanders, 24LC256 EEPROM, 4N25-series optocouplers and ULN2803A drivers — bare DIP chips with no breakout-board conveniences like pull-ups or level shifting.

Components · Integrated circuits · 67 parts

Converters

ADS1115/MCP3421 ADCs, MCP4725 and GP8413 DACs, CP2102 USB-UART boards, and I2C plumbing like the LTC4316 address shifter — matched to bus, resolution and signal range.

Components · Interface converters · 114 parts

Passives

E12 resistor kits, ceramic and electrolytic capacitor sets, 1N4148/1N4007 diodes, TIP120 Darlingtons, IRLZ44N MOSFETs and 100F supercapacitors — bench stock in kit quantities.

Components · Passives · 56 parts