# MicroSD Sniffer Adapter, SPI Test

> MicroSD Sniffer Adapter (ref. 88043) for testing and debugging SPI communication between a microSD card and a microcontroller. Features a standard microSD socket, a connector that plugs directly into the port, and 2.54mm breakout pins for DAT1, DAT0, CLK, VCC, GND, CMD, CD, DAT2. Allows real-time monitoring with a logic analyzer or oscilloscope. Dimensions: 47 x 28mm.

- Page: https://sigmanortec.ro/en/microsd-sniffer-adapter-spi-test
- Price: 8.88 RON
- Availability: In stock; 1-2 zile
- Reference: 88043 · EAN: 5943064011108
- Category: Mechatronics and IoT > Sensors and Modules > Data Storage Module
- Package (shipping data): 0.005 kg
- Updated: 2026-09-23
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 03:25 (Europe/Bucharest)

## Description

Adapter for testing and debugging SPI communication between microSD card and microcontroller, allows real-time sniffing and signal visualization with logic analyzer or oscilloscope. It has a standard microSD socket and connector that plugs directly into the port, plus 2.54mm breakout pins for quick access to CLK, CMD, DAT0, VCC and GND on breadboard or test leads. Ideal for rapid development and diagnostics.
microSD Sniffer adapter for testing and debugging SPI communication between a microSD card and a microcontroller or other device. It allows real-time monitoring of signals transmitted over the SPI bus, making it possible to visualize the data with a logic analyzer or oscilloscope.
The module is equipped with a standard microSD socket, a MicroSD connector that can be inserted directly into the MicroSD port, and breakout pins for connection to a breadboard or test leads.
It inserts in place of a regular microSD card and provides direct access to data, clock, control and power lines. It is ideal for developers, electronics enthusiasts or those who need to debug circuits that use microSD cards.
Specifications:
Type: microSD Sniffer Test Adapter
Connection: 2.54mm breakout pins
Function: Monitoring and analyzing SPI signals between microSD and microcontroller
Compatibility: Standard microSD cards
Available pins: DAT1, DAT0, CLK, VCC, GND, CMD, CD, DAT2
Dimensions: 47 x 28mm
Pinout:
Pine | Name | Function
DAT1 | Date 1 | Additional data line in 4-bit mode
DAT0 | Date 0 | Main data line (also used in SPI mode)
CLK | Clock | Clock signal for communication synchronization
VCC | feeding | Supply voltage for the microSD card (typically 3.3V)
GND | Mass | Table reference
CMD | Command | Command line for sending instructions to the card
CD | Card Detect | Detects the presence of the card in the socket
DAT2 | Date 2 | Additional data line in 4-bit mode
Use:
Insert the microSD card into the adapter socket.
Connect the adapter instead of a normal microSD card in a module, shield or PC.
Connect the breakout headers to a logic analyzer, oscilloscope, or microcontroller, as needed.
Start the system and view the SPI traffic in the analyzer software.
Use the information for troubleshooting, testing, and circuit development.