Adafruit MicroSD Card Breakout Board
Overview
The Adafruit 254 is a specialized breakout board designed to simplify adding mass storage to microcontroller projects via a MicroSD card slot. It features an onboard 3.3V regulator and level shifting circuitry, making it safe to use with both 3V and 5V logic levels common in embedded systems.
Why Choose This Part
This board includes a true level shifter (74HC4050) rather than a simple resistor divider, ensuring high-speed data integrity and reliable operation with 5V microcontrollers like the Arduino Uno. It also integrates a 3.3V regulator to power the SD card from the system's 5V rail.
Applications
Getting Started
Connect the breakout to your microcontroller using the SPI interface (MOSI, MISO, SCK, and CS). For Arduino users, the standard SD library is fully compatible; simply initialize the SD card using the appropriate Chip Select pin in your sketch.
Also Consider
Adafruit
- An alternative for projects requiring a push-push type socket for easier card ejection in enclosures.
