Description
SK hynix Registered DDR4 SDRAM DIMMs (Registered Double Data Rate Synchronous DRAM Dual In-Line
Memory Modules) are low power, high-speed operation memory modules that use DDR4 SDRAM devices.
These Registered SDRAM DIMMs are intended for use as main memory when installed in systems such as
servers and workstations.
Features
• Power Supply: VDD=1.2V (1.14V to 1.26V)
• VDDQ = 1.2V (1.14V to 1.26V)
• VPP - 2.5V (2.375V to 2.75V)
• VDDSPD=2.25V to 2.75V
• Functionality and operations comply with the DDR4 SDRAM datasheet
• 16 internal banks
• Bank Grouping is applied, and CAS to CAS latency (tCCD_L, tCCD_S) for the banks in the same or dif-
ferent bank group accesses are available
• Data transfer rates: PC4-3200, PC4-2933, PC4-2666, PC4-2400, PC4-2133, PC4-1866, PC4-1600
• Bi-Directional Differential Data Strobe
• 8 bit pre-fetch
• Burst Length (BL) switch on-the-fly BL8 or BC4(Burst Chop)
• Supports ECC error correction and detection
• On-Die Termination (ODT)
• Temperature sensor with integrated SPD
• This product is in compliance with the RoHS directive.
• Per DRAM Addressability is supported
• Internal Vref DQ level generation is available
• Write CRC is supported at all speed grades
• DBI (Data Bus Inversion) is supported(x8)
• CA parity (Command/Address Parity) mode is supported
Ordering Information
# of
ranks
Part Number
Density
Organization
Component Composition
HMA81GR7DJR8N-VK/WM/XN
HMA82GR7DJR8N-VK/WM/XN
HMA82GR7DJR4N-VK/WM/XN
HMA84GR7DJR4N-VK/WM/XN
8GB
1Gx72
2Gx72
2Gx72
4Gx72
1Gx8(H5AN8G8NDJR)*9
1Gx8(H5AN8G8NDJR)*18
2Gx4(H5AN8G4NDJR)*18
2Gx4(H5AN8G4NDJR)*36
1
2
1
2
16GB
16GB
32GB
Rev. 1.2 / Jul.2019
3