Emmc Cid Decoder

When your decoder spits out a result, here are a few common IDs you might see: SanDisk/Western Digital 0x11: Toshiba 0x13: Micron 0x15: Samsung 0x45: SanDisk 0x90: SK Hynix

The consistency of a manufacturer's CID fields can be used to authenticate components. For instance, all eMMC chips from a legitimate supplier will have a specific MID and follow a consistent product name format (PNM). If you're sourcing replacement chips from unofficial channels, decoding the CID can reveal inconsistencies: the MID might not match the declared manufacturer, or the product revision might be incorrect. This is especially valuable in supply chain security, where counterfeit components are a genuine risk.

The first two hex characters (8 bits) represent the manufacturer. Decoders match this byte against a known JEDEC registry database. For example: 0x15 = Samsung 0x90 = SK Hynix 0x45 = SanDisk 0x13 = Micron 0xFE = Micron/Numonyx 0x70 = Kingston 2. Decoding the Product Name (PNM) emmc cid decoder

cat /sys/block/mmcblk0/device/cid

file path in your specific operating system (e.g., Android via ADB). When your decoder spits out a result, here

A robust eMMC CID decoder breaks down the raw hex string into human-readable data points:

Typical eMMC CID structure (MSB → LSB; total 128 bits): This is especially valuable in supply chain security,

Encoded date, usually representing a month/year combination (e.g., Oct 2023). Common Manufacturer IDs (MID)