Storage Module
Waveshare
Micro SD Storage Board
Alias: MicroSD module 、 TF card module 、 SD card reader 、 Waveshare 、 SDIO 、 SPI storage
Specifications
Brand Waveshare
SKU 3947
Type Micro SD (TF) card read/write expansion module
Supported Card Types Micro SD / TF cards (incl. Micro SDHC high-speed cards)
Interface Modes SDIO (4-bit/1-bit) and SPI dual mode
Operating Voltage 3.3V
SPI Pins CS, SCK, MOSI, MISO
SDIO Pins CMD, CLK, DAT0~DAT3
Additional Pin CD (Card Detect, card insertion detection)
Pin Pitch 2.54mm standard header
Module Size Approx. 30 × 23 mm
On-board Resources Micro SD card slot (push-pull type), signal traces
Level Shifting None (module designed for 3.3V logic level)
Applications Data loggers, file system read/write (FATFS), embedded mass storage expansion, portable players, camera storage