Ufs 3.1 Pinout ((top)) -

UFS 3.1 is engineered for extreme power efficiency, often requiring up to 83% less power during active use than traditional SSDs. 153-Ball Automotive UFS Memory - Mouser Electronics

Reading a UFS 3.1 chip typically requires a dedicated UFS programmer (such as Medusa Pro II, EasyJtag Plus with UFS socket, or MiPi Tester) along with a specialized BGA 153/254 socket. The chip must usually be desoldered from the target board (chip-off method) rather than wired in-system.

(Note: Some early UFS implementations used a VCCQ rail for the controller and VCCQ2 for the PHY, but modern UFS 3.1 BGA packages generally consolidate these into the standard VCC and VCCQ2 configuration.)

Technicians attempting to read a UFS chip "off-board" (using a programmer like UFI or Easy JTAG) cannot simply locate a generic pinout. They must look up the specific Ball Map (BGA schematic) for that specific model number (e.g., Samsung KLUEG8UHDB-C2B1). Connecting the Data lanes without the correct REFCLK and VCCQ2 voltages will result in communication failure. ufs 3.1 pinout

Hardware Reset. An active-low signal used by the host processor to hard-reset the UFS device controller. Power Supply Lines

Hi everyone,

(NC = No Connect / Reserved)

A secondary, lower-voltage supply for the ultra-low-power physical layer (M-PHY). Key Features Enabled by the Pinout

based on the MIPI M-PHY physical layer. This reduces the number of required signal pins while enabling full-duplex communication (simultaneous reading and writing). Kioxia Singapore Pte. Ltd. Critical Signal Groups

Before dissecting the pinout, it is crucial to understand the internal architecture of a UFS 3.1 chip. (Note: Some early UFS implementations used a VCCQ

Pair-to-pair and within-pair length matching is critical to avoid skew.

Note: Always consult the specific datasheet for your device (e.g., Kioxia, Samsung) as minor layout variations may occur. 2.1 Signal Groups

: Many central balls (e.g., row F–J) are NC (No Connect) . Do not ground them – they may be test points or unused. Hardware Reset

Universal Flash Storage (UFS) 3.1 is a cornerstone technology in modern high-end smartphones, automotive infotainment systems, and embedded devices. Delivering sequential read speeds up to 2,100 MB/s, UFS 3.1 bridges the gap between mobile storage and desktop-class NVMe SSDs.

Unlike older eMMC storage which heavily relies on the BGA153 form factor, UFS 3.1 deployment primarily utilizes two JEDEC-standard ball grid arrays depending on whether the storage is standalone or integrated into a multi-chip package.