KMQD60013M-B318 is a Samsung eMCP memory chip that combines eMMC storage and LPDDR3 RAM in one BGA package. It is used in smartphones, tablets, and embedded devices to save board space. Since it handles firmware, boot data, apps, user files, and active memory, faults can cause boot loops, flashing errors, and restarts. This article gives information about KMQD60013M-B318.
What Is KMQD60013M-B318?
KMQD60013M-B318 is a Samsung memory component listed as an eMCP, which means it combines eMMC flash storage and LPDDR3 RAM in one compact BGA package. In actual terms, the eMMC section stores the operating system, firmware, apps, boot data, and user files, while the LPDDR3 RAM section supports temporary working memory for system operation.
This type of chip is used in smartphones, tablets, and compact embedded devices where board space is limited. Instead of using separate storage and RAM chips, an eMCP integrates both functions into one package, helping reduce PCB size and simplify memory layout.
For repair technicians, KMQD60013M-B318 is searched when diagnosing boot loop problems, failed firmware flashing, storage detection errors, dead boot issues, or memory chip replacement. Public component listings describe KMQD60013M-B318 as a Samsung eMCP with 32GB eMMC 5.1 storage and 16Gb LPDDR3 RAM in a 221FBGA / 221-ball package.
KMQD60013M-B318 Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Samsung |
| Component Type | eMCP / MCP memory |
| Storage Type | eMMC flash |
| Common Storage Capacity | 32GB |
| eMMC Version | eMMC 5.1 |
| RAM Type | LPDDR3 |
| Common RAM Density | 16Gb |
| Package | 221FBGA / 221-ball BGA |
| RAM Speed Class | Commonly listed as 1866Mbps |
| Typical Use | Mobile devices, embedded boards, repair applications |
| Main Function | Combines system storage and working memory |
KMQD60013M-B318 Pinout and BGA221 Ball Layout
KMQD60013M-B318 uses a BGA package, which means its electrical connections are made through solder balls underneath the chip. Unlike connectors with visible pins, a BGA chip requires accurate alignment, proper soldering, and a matching PCB footprint.
The ball layout is required because each solder ball has a specific function. If the replacement chip has a different ball assignment, the device may fail to boot, fail to detect storage, restart randomly, or become completely dead.
Common Ball Groups Include
• eMMC command and data balls - used for communication between the processor and flash storage.
• eMMC clock ball - controls timing for storage communication.
• LPDDR3 data and control balls - support RAM access and system operation.
• Power balls - supply voltage to the storage, RAM, and I/O sections.
• Ground balls - provide stable reference and reduce electrical noise.
• Reserved or no-connect balls - should not be connected incorrectly.
• Reset and control balls - help initialize the memory during startup.
KMQD60013M-B318 Test Points and Board-Level Diagnosis
Test points are useful for checking whether the memory chip receives correct power and communicates properly with the processor. They are required when a device has no boot, boot loop, flashing, or storage detection problems.
| Test Area | What It Checks | Possible Fault |
|---|---|---|
| VCC | Main memory power supply | Missing voltage, short circuit, PMIC fault |
| VCCQ | I/O voltage for communication | No detection, unstable data transfer |
| GND | Ground connection | Poor soldering, broken trace, board damage |
| CLK | eMMC clock signal | No storage communication |
| CMD | Command response line | Flashing failure, no eMMC detection |
| DAT0-DAT7 | Data transfer lines | Read/write errors, boot failure |
| RESET | Initialization behavior | Chip not starting correctly |
| Power rail resistance | Short detection | Shorted chip, damaged capacitor, board fault |
A multimeter is enough for checking voltage, resistance, and short circuits. For deeper analysis, an oscilloscope can help confirm whether clock and data signals are active during boot. An eMMC programmer can also read chip information, test access, and verify whether the memory responds correctly.
How KMQD60013M-B318 Affects Device Performance
If the eMMC section is weak or corrupted, the device may show stuck logo, failed flashing, storage detection errors, slow boot, or read/write failure. If the LPDDR3 section is unstable, symptoms may include random restart, black screen, sudden shutdown, or unpredictable system crash.
The eMMC storage area contains firmware, boot partitions, system files, apps, logs, and user data. If this section becomes weak or corrupted, the device may freeze, boot slowly, restart repeatedly, fail during firmware flashing, or stay stuck on the startup logo.
The LPDDR3 RAM section supports active system operation. If the RAM area has a fault, the device may show random restarts, black screen symptoms, unstable boot behavior, sudden shutdowns, or unpredictable system crashes.
This is why memory-related problems should not be diagnosed by software flashing alone. A flashing error may be caused by wrong firmware, but it may also come from bad eMMC blocks, unstable RAM, poor soldering, weak power rails, or processor-side communication issues.
KMQD60013M-B318 Firmware, Dump Files, and Programming
Replacing KMQD60013M-B318 does not always make the device boot immediately. The chip may require correct boot partitions, firmware files, EXT_CSD settings, and device-specific configuration before normal startup.
Before programming, check:
• Device brand and model
• Board version
• CPU platform
• Original eMMC and LPDDR3 configuration
• Boot partition data
• EXT_CSD settings
• RPMB restrictions
• Firmware version and region compatibility
• Whether the dump file came from a proven compatible board
A dump file should not be used only because it mentions KMQD60013M-B318. Wrong firmware may cause failed flashing, locked boot, black screen, or unstable operation.
Common Problems Solved by Replacing KMQD60013M-B318
| Device Symptom | Possible Cause | What to Check First |
|---|---|---|
| Stuck on logo | Corrupted eMMC partitions or weak storage | Firmware flash, eMMC health, boot partitions |
| Flashing fails | Bad blocks or unstable storage communication | CID, EXT_CSD, CMD, CLK, DAT lines |
| No boot | Dead eMCP, shorted rail, or missing voltage | VCC, VCCQ, ground resistance |
| Storage not detected | Failed eMMC controller or signal fault | Programmer detection, data lines, solder joints |
| Random restart | RAM issue, poor soldering, unstable voltage | LPDDR3 area, power rails, heat behavior |
| Device freezes | Weak memory cells or corrupted system data | Read/write test, firmware verification |
| Black screen after repair | Wrong firmware or bad soldering | Recheck firmware, alignment, and power rails |
| High current draw | Shorted chip or nearby component | Resistance test before power-on |
KMQD60013M-B318 Compatibility and Replacement Tips
Before choosing a replacement, confirm:
• Exact part number: KMQD60013M-B318.
• Manufacturer: Samsung.
• Storage capacity: commonly listed as 32GB.
• RAM density: commonly listed as 16Gb LPDDR3.
• Interface: eMMC 5.1 + LPDDR3.
• Package: 221FBGA / 221-ball.
• Ball map compatibility with the target PCB.
• Firmware support for the device model.
• Boot partition and EXT_CSD configuration.
• Whether the chip is new, pulled, reballed, or refurbished.
A higher-capacity memory chip is not always a safe upgrade. The processor, firmware, and partition layout must support the replacement. For most repair cases, the safest option is to use the exact same part number or a proven compatible donor chip from the same device platform.
KMQD60013M-B318 vs Similar Samsung eMCP Parts
Similar Samsung eMCP parts may share storage capacity, RAM type, or package size, but they are not automatically interchangeable. Replacement must be confirmed by ball map, RAM density, firmware support, CPU platform, and boot configuration.
| Part Number | Commonly Listed Storage | Commonly Listed RAM | Package | Replacement Note |
|---|---|---|---|---|
| KMQD60013M-B318 | 32GB eMMC 5.1 | 16Gb LPDDR3 | 221FBGA | Best choice when this exact chip is originally used |
| KMQE10013M-B318 | 16GB eMMC 5.1 | 16Gb LPDDR3 | 221FBGA | Lower storage capacity; verify firmware support |
| KMQE60013M-B318 | 16GB eMMC 5.1 | 16Gb LPDDR3 | 221FBGA | Similar family but not automatically interchangeable |
| KMGX6001BM-B514 | 32GB eMMC 5.1 | 24Gb LPDDR3 | 221FBGA | Different RAM density; must verify platform support |
| KMGP6001BM-B514 | 64GB eMMC 5.1 | 24Gb LPDDR3 | 221FBGA | Higher storage and RAM; not a direct assumption |
Frequently Asked Questions [FAQ]
Why can KMQD60013M-B318 cause both boot failure and random restart?
KMQD60013M-B318 contains both eMMC storage and LPDDR3 RAM. eMMC faults may cause stuck logo, failed flashing, or storage detection errors, while LPDDR3 faults may cause random restart, black screen, sudden shutdown, or unstable boot behavior.
Can KMQD60013M-B318 be replaced only by matching 32GB eMMC and 16Gb LPDDR3?
No. Capacity is not enough. The replacement must also match the 221FBGA ball layout, power rails, CPU platform support, firmware configuration, boot partition structure, and RAM compatibility.
Why can firmware flashing fail even after replacing KMQD60013M-B318?
Flashing may fail because of wrong firmware, missing boot partitions, incompatible EXT_CSD settings, RPMB restrictions, bad soldering, unstable VCC/VCCQ rails, or damaged CMD, CLK, and DAT lines.
What test points should be checked before replacing the chip?
Check VCC, VCCQ, GND, CLK, CMD, DAT0–DAT7, RESET, and power rail resistance. These points help separate a bad eMCP from PMIC faults, broken traces, soldering defects, or processor-side communication issues.
Why is using a higher-capacity Samsung eMCP not always safe?
A higher-capacity eMCP may have a different RAM density, partition requirement, firmware support condition, or platform limitation. Without proven compatibility, the device may fail to boot, flash incorrectly, or run unstably.
