Raspberry Pi eMMC to TF SD Card Module

Raspberry Pi eMMC to TF SD Card Module – Seamless Storage Bridging

The Raspberry Pi eMMC to TF SD Card Module is a compact, high‑speed interfacing board that transforms an eMMC storage chip on a Raspberry Pi board into a full‑featured TF (microSD) card slot. Designed for developers and hobbyists, it enables rapid prototyping, boot‑media migration, and low‑cost storage expansion without the need for a power supply redesign. The module utilizes the Pi’s native eMMC eFuse data, maps it to a standard 4‑bit SD bus, and presents a reliable, 160 ns latency interface suitable for real‑time operating systems.

• Connection Interface: 40‑pin female header matching the Raspberry Pi eMMC pads, supporting 1.8 V/3.3 V logic levels
• Transfer Speed: UHS‑I compatible, up to 100 MB/s read/write with SDR12/SDR25 modes; 55 MB/s guaranteed for SD 2.0 cards
• Capacity Support: Compatible with TF cards up to 128 GB (SDHC/SDXC), automatically handling LBA mapping and ECC
• Common Use Case: Quick migration of Raspberry Pi OS images onto TF cards for portable projects, or creating a backup environment for a Raspberry Pi without an onboard eMMC