SK HYNIX · UMCP · Exact part
H9HQ21AECMADAR-KEM
Two independent supplier/catalog references agree on density/package family. This is not SK hynix primary documentation; compatibility remains disabled.
Identity & specification
| Part number | H9HQ21AECMADAR-KEM |
|---|---|
| Manufacturer | SK HYNIX |
| Record type | Exact part |
| Top marking | H9HQ21AECMAD |
| Aliases | H9HQ21AE,H9HQ21AECMADAR,H9HQ21AECMAD |
| Storage type | UMCP |
| Capacity | 256 GB |
| RAM | 6 GB LPDDR4X |
| Protocol | UFS (uMCP) |
| Package | 254 FBGA |
| Ball count | 254 |
| Pinout family | UMCP_BGA254 |
| Voltage notes | uMCP uses separate UFS and LPDDR4X rails; verify board power domains and DRAM training requirements. |
| Observed in devices | Not established |
Evidence
Distributor
Source: Cross-checked SK hynix supplier catalogs (Preduo/Puris)
Verification status: corroborated_secondary_supplier_requires_primary_or_programmer_confirmation
Source score 0.86 — dataset metadata, not a probability of fitment.
Screening data incomplete
- ✓ Exact identity from a strong source
- ✓ Capacity
- ✗ Protocol version
- ✓ Ball count
- ✓ RAM size
- ✓ No open conflict
Verify CID/EXT_CSD for eMMC or UFS descriptors/LU geometry/RPMB for UFS before donor substitution.
A matching part number or package does not prove donor compatibility. Before replacement confirm the ball map, VCC/VCCQ, protocol generation, capacity geometry, DRAM training (MCP), CID/EXT_CSD or UFS descriptors, RPMB and OEM provisioning.