Micro SD / TF Card Module — SPI Interface, 3.3V/5V, Arduino, D1 Mini, ARM, AVR

Micro SD / TF Card Module — SPI Interface, 3.3V/5V, Arduino / ESP32 / ARM / AVR

This Micro SD/TF card module adds removable flash storage to any microcontroller via the standard SPI interface. An onboard 3.3V level converter makes it compatible with both 5V (Arduino Uno/Mega) and 3.3V (ESP32, STM32, Raspberry Pi) systems without additional components. Supports FAT16/FAT32 formatted cards up to 32GB.

Key Specifications

Parameter	Value
Interface	SPI (MOSI, MISO, SCK, CS)
Supply Voltage	3.3V – 5V DC
Card Voltage	3.3V (onboard regulator + level shifter)
Supported Cards	Micro SD / TF (up to 32GB, FAT16/FAT32)
SPI Speed	Up to 25MHz
Operating Temperature	−40°C to +85°C
Connector	6-pin header (VCC, GND, MISO, MOSI, SCK, CS)
Module Size	~42 × 24mm

Why Choose This SD Module?

• Onboard Level Shifter — Safely interfaces 5V Arduino with 3.3V SD card without external components
• 3.3V Regulator — Powers SD card from 5V supply; no separate 3.3V rail needed
• Standard SPI Interface — Compatible with Arduino SD library, ESP-IDF, STM32 HAL, and FatFs
• Wide Temperature Range — −40°C to +85°C for outdoor and industrial data logging
• Compact Module — 42×24mm fits in most project enclosures

Typical Applications

• Arduino data logger (temperature, humidity, GPS coordinates to CSV)
• ESP32 web server serving files from SD card
• Oscilloscope and logic analyzer waveform storage
• Audio playback from SD card (WAV files with TMRpcm library)
• Configuration file storage for embedded systems
• Black box / event recorder for robotics and vehicles

Arduino Wiring (Uno)

Module Pin	Arduino Uno
VCC	5V
GND	GND
MISO	Pin 12
MOSI	Pin 11
SCK	Pin 13
CS	Pin 10 (or any digital pin)

FAQ

Q: What SD card size and format is supported?
A: Up to 32GB Micro SD/TF cards formatted as FAT16 or FAT32. SDXC cards (exFAT, >32GB) are not supported by the standard Arduino SD library.

Q: Can I use this module with ESP32?
A: Yes — connect to ESP32 SPI pins (MOSI=23, MISO=19, SCK=18, CS=5 by default). Use the ESP32 SD library or SD_MMC for faster speeds.

Package Contents

• 1× Micro SD/TF Card Module (SPI, with level shifter)

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