KLM8G1GETF-B041 Datasheet, Pinout, Equivalents, and Specs

The KLM8G1GETF-B041 is a managed NAND flash memory solution from Samsung, integrating 8 GigaBytes (GB) of storage capacity with an eMMC controller in a single package. It adheres to the JEDEC eMMC 5.1 standard, providing a high-speed, reliable storage interface for a wide range of embedded systems. As part of Samsung's eMMC product family, this device is positioned for applications requiring a balance of performance, density, and simplified system integration, offloading complex flash management from the host processor.

What is the KLM8G1GETF-B041?

The KLM8G1GETF-B041 is an Embedded MultiMediaCard (eMMC) that combines Multi-Level Cell (MLC) NAND flash memory with an intelligent controller and firmware into a compact Ball Grid Array (BGA) package. This integrated architecture abstracts the complexities of raw NAND management, such as wear-leveling, bad block management, and Error Correction Code (ECC). The host system interacts with the device using a standardized high-level protocol, significantly reducing design complexity and time-to-market. Its target market includes industrial automation, automotive infotainment, single-board computers (SBCs), and consumer electronics where robust, non-volatile storage is a primary requirement.

Pinout Configuration and Packaging

The KLM8G1GETF-B041 is supplied in a 153-ball Fine-pitch Ball Grid Array (FBGA) package with dimensions of 11.5mm x 13mm. This high-density package is optimized for space-constrained PCB designs. Critical I/O pins include the 8-bit parallel data bus (DAT0-DAT7), a command line (CMD), a clock line (CLK), and a hardware reset pin (RST_n). The ball map is standardized by JEDEC for interoperability. Thermal management is a key consideration; a sufficient number of thermal vias should be placed on the PCB land pattern directly under the package to connect to a ground plane, facilitating heat dissipation during high-throughput read/write operations.

Core Architectural Features

• JEDEC eMMC 5.1 Standard Interface: The device supports the high-speed HS400 interface mode, enabling a maximum bus speed of 400 MB/s. It maintains backward compatibility with previous eMMC standards, ensuring broad host processor support.
• Integrated Flash Management Controller: The onboard controller autonomously manages all NAND operations. This includes dynamic and static wear-leveling to maximize the lifespan of the MLC NAND, bad block management to ensure data integrity, and a robust ECC engine to correct bit errors.
• Advanced Partitioning and Security: The KLM8G1GETF-B041 supports multiple physical partitions, including user data areas, dedicated boot partitions for secure system startup, and a Replay Protected Memory Block (RPMB) partition. The RPMB provides a secure, authenticated mechanism for storing sensitive data like credentials or calibration parameters.
• Dual Voltage I/O Support: The device features a flexible I/O voltage (VCCQ) that can operate at either 1.8V (1.7V-1.95V) or 3.3V (2.7V-3.6V), allowing direct connection to a wide variety of host SoCs without the need for external level shifters. The core NAND voltage (VCC) operates from 2.7V to 3.6V.

Specifications Parameter Table

KLM8G1GETF-B041 Equivalents, Cross Reference, and Lifecycle

The KLM8G1GETF-B041 is considered an active but mature component, often categorized as Not Recommended for New Designs (NRND) in favor of newer UFS or higher-density eMMC solutions. However, it remains a viable and cost-effective option for legacy product support and new designs with moderate performance requirements. When sourcing alternatives due to allocation or long lead times, engineers should look for 8GB eMMC 5.1 devices in the 153-ball, 11.5x13mm FBGA package. A potential alternative is the Micron MTFC8GAKAJCN-4M IT. While this part shares key specifications like density, interface, and package, it is critical to verify the ball map for pin-to-pin compatibility. Firmware differences between manufacturers can also lead to subtle variations in performance and command timing, necessitating full system-level validation before committing to a drop-in replacement.

Typical Application & Circuit Considerations

The KLM8G1GETF-B041 is commonly used in applications such as single-board computers, automotive head units, industrial HMIs, and set-top boxes. For reliable operation, proper power supply decoupling is essential. Place low-ESR ceramic capacitors (e.g., 0.1µF and 1.0µF) as close as possible to each VCC and VCCQ pin. PCB layout for the high-speed interface signals (CLK, CMD, DAT0-7) is critical. These traces should be routed as a group with controlled impedance (typically 50Ω), length-matched to minimize signal skew, and shielded by ground planes to reduce EMI and ensure signal integrity, particularly when operating in HS400 mode.

Video Demonstration

Alan Carter

Senior Hardware Engineer & Component Specialist

Alan has over 15 years of expertise in embedded systems design, FPGA architecture, and global semiconductor supply chains. He specializes in component cross-referencing, lifecycle management, and helping OEMs navigate supply shortages.