The KLM8G1GETF-B041 is Samsung managed NAND storage with an eMMC interface. For a repair purchase or an existing embedded design, the useful starting point is the complete ordering code, the board's storage configuration and the available software support. A capacity match alone does not establish that another memory device will work.
KLM8G1GETF-B041 specifications and document reference
Samsung's eMMC product family datasheet, revision 1.21 identifies this ordering code. The following values come from pages 4, 6, 9, 14 and 27. This Samsung-authored historical document is hosted by a third party; obtain the applicable controlled specification when releasing a design.
| Item | Documented value |
|---|---|
| Nominal capacity | 8 GB; NAND organization 64 Gb × 1 |
| Interface | eMMC 5.1; 1-, 4- and 8-bit data widths |
| Package | 153-ball FBGA; 11.5 × 13 × 0.8 mm outline |
| Flash supply, VCC | 2.7–3.6 V |
| High speed I/O | HS200 and HS400 at 1.8 V; VCCQ window 1.70–1.95 V |
| Operating temperature | −25 to +85 °C |
| Listed user area | 7,818,182,656 bytes |
The document's revision history dates revision 1.21 to July 10, 2017. That is a specification revision date, not an established product launch date. Its temperature range does not establish automotive qualification.
Package and pinout checks before board work
Page 5 gives the ball map: CMD is M5, CLK is M6, data strobe is H5 and reset is K5. Use the complete drawing for all data, power, ground and reserved balls. Confirm its viewing direction before comparing it with a footprint.
For an existing board, compare the approved PCB library with the drawing rather than measuring only the package body. Record the orientation mark, land pattern and assembly drawing revision in the repair or change package. A photograph can help identify orientation and marking differences, but should not replace a dimensional check.
Plan the rework inspection before ordering replacement material. Ask the assembly team to identify the process and acceptance criteria it can support for this board. Do not add vias or change the land pattern on the assumption that a generic BGA thermal recommendation applies. For a board redesign, derive routing, decoupling and fabrication requirements from the selected host's design guidance and the applicable memory specification.
Host interface and startup workflow
Build a reproducible baseline on a known working board before changing the storage component. Keep the processor revision, bootloader, device tree or equivalent configuration, operating system and programming tools together in the record. A component substitution accompanied by a software update is harder to diagnose unless each change has its own baseline.
- Review the electrical configuration. Check the actual board rails, host I/O limits, reset connections and selected timing mode. Do not infer that a voltage suitable for one mode is suitable for every mode.
- Capture identity and configuration. Save the detected device identity and relevant register report before altering partitions or boot settings. Compare the report with the ordered part and the approved platform configuration.
- Establish basic communication. Use the host vendor's documented initialization procedure. Record enumeration errors and power measurements before attempting higher interface speeds.
- Validate the intended operating mode. Check the mode actually negotiated by the driver. A host capability flag or a successful boot is insufficient evidence that the selected high speed configuration is stable.
- Exercise the complete system. Include cold starts, warm resets, image updates and recovery from an interrupted update in a controlled test plan. Use recoverable engineering samples for destructive or power interruption work.
Define each test's acceptance limit before running it. For example, distinguish a device that is not detected from one that is detected but cannot load the expected image. Keep the console log and configuration with the result so another engineer can reproduce the failure.
Capacity and performance planning
Size the software image against the available user area and the product's partition plan. Budget explicitly for the operating system, application data, update image, logs and recovery space. Add a margin owned by the system designer instead of treating all nominal capacity as deployable storage.
For performance qualification, write down the workload: transfer size, read/write mix, queue behavior, filesystem, fill level and temperature. Measure elapsed application time as well as storage throughput when startup or updating is the real requirement. Report interface mode alongside the result. An HS400 label alone does not establish the application's sustained speed.
For write intensive products, estimate the amount of data the application writes per day and identify burst periods. Use that estimate to request suitable endurance information and to design validation. Do not convert an assumed write rate into a service life without an applicable endurance basis, workload assumptions and margin.
Buying the exact part and evaluating alternatives
Put KLM8G1GETF-B041 on the RFQ and state whether suffix changes are acceptable. Include quantity, required date, packaging, traceability requirements and any inspection or documentation the project needs. Ask the supplier to confirm the quoted ordering code and lot details in writing. A catalog entry alone does not confirm current availability, condition, delivery or suitability.
For repeat production, retain the approved component record and compare new offers against it. If lifecycle continuity matters, request a current manufacturer notice or written status confirmation. A historical datasheet cannot establish today's production status, and the introduction of newer storage technologies does not establish an NRND designation for this ordering code.
Evaluate a proposed replacement through a change review covering package, ball assignments, electrical limits, host support, usable capacity, boot configuration and workload results. Set an explicit approval owner. Keep an unqualified candidate separate from the production BOM until the required evidence and system tests are complete.
Frequently asked questions
Is the KLM8G1GETF-B041 an FPGA?
It is an eMMC storage component. Select it through the storage interface and software requirements of the host platform.
Can I use any other 8 GB eMMC?
Use a documented engineering comparison and board validation before approving a different ordering code. Shared capacity is only one item in that comparison.
What should a purchase request include?
Provide the full ordering code, quantity, required date, approved substitution rules and required lot documentation. For an existing design, identify the approved BOM revision so purchasing and engineering use the same acceptance basis.
Does a successful boot complete validation?
Treat booting as one result in the qualification plan. Retain evidence for the operating mode, workload, update process and recovery behavior that the finished product requires.