UFS 3.1 (Universal Flash Storage) is a high-speed, serial interface designed for mobile systems like smartphones and tablets. Unlike older parallel interfaces like eMMC, the utilizes Low Voltage Differential Signaling (LVDS) to achieve high-performance full-duplex operation, allowing the device to read and write simultaneously. UFS 3.1 Pin Configuration Overview

The most common physical package for UFS 3.1 is the , measuring approximately 11.5mm x 13.0mm. The reduced pin count compared to eMMC simplifies PCB routing while enabling much higher bandwidth.

UFS 3.1 | Universal Flash Storage | Samsung Semiconductor Global

UFS 3.1 typically supports a 2-lane configuration (2 TX and 2 RX pairs), doubling the bandwidth compared to single-lane setups. Power Supply Pins

Differential data lanes for receiving data from the storage device to the host.

Provides the base frequency for the M-PHY. Modern UFS 3.1 devices like those from Samsung Semiconductor require a precise reference clock to transition into high-speed modes.

Differential data lanes for sending information from the host to the storage device.

According to technical specifications from Arasan Chip Systems and Kingston , the pinout is categorized into high-speed data lanes, power supply lines, and control signals.

Bolstered by JEDEC standards, the UFS 3.1 offers high-performing storage with serious speed. It's thanks in part to Write Booster, samsung.com Samsung UFS Card

Ground pins used for power return and signal shielding. Clock and Control Signals