64GB (x72, ECC, QR) 288-Pin DDR4 LRDIMM Features DDR4 SDRAM LRDIMM MTA72ASS8G72LZ 64GB Figure 1: 288-Pin LRDIMM (MO-309, R/C-E2) Features Module height: 31.25mm (1.23in) DDR4 functionality and operations supported as defined in the component data sheet 288-pin, command/address/control-registered, da- ta-buffered, load-reduced dual in-line memory module (LRDIMM) Fast data transfer rates: PC4-2933, PC4-2666, or PC4-2400 Figure 2: 288-Pin LRDIMM (MO-309, R/C-E2) 64GB (8 Gig x 72) Module height: 31.25mm (1.23in) V = 1.20V (NOM) DD V = 2.5V (NOM) PP V = 2.5V (NOM) DDSPD Supports ECC error detection and correction Nominal and dynamic on-die termination (ODT) for data, strobe, and mask signals Options Marking Low-power auto self refresh (LPASR) Operating temperature On-die internal, adjustable V generation REFDQ Commercial (0C T 95C) None OPER Quad-rank, using 16Gb TwinDie DDR4 Package 2 288-pin DIMM (halogen-free) Z On-board I C temperature sensor with integrated Frequency/CAS latency serial presence-detect (SPD) EEPROM 0.682ns CL = 21 (DDR4-2933) -2G9 16 internal banks 4 groups of 4 banks each 0.75ns CL = 19 (DDR4-2666) -2G6 Fixed burst chop (BC) of 4 and burst length (BL) of 8 0.83ns CL = 17 (DDR4-2400) -2G3 via the mode register set (MRS) Selectable BC4 or BL8 on-the-fly (OTF) Gold edge contacts Halogen-free Fly-by topology Multiplexed command and address bus Terminated control, command, and address bus Table 1: Key Timing Parameters Data Rate (MT/s) CL = t t t 20 18 16 14 12 10 RCD RP RC PC4- 24 22 21 19 17 15 13 11 9 ns ns ns -3G2 3200 3200, 3200, 2933 2666 2400 2133 1866 1600 1333 13.75 13.75 45.75 2933 2933 2666 2400 2133 1866 1600 -2G9 2933 2933 2933 2666 2400 2133 1866 1600 1333 14.32 14.32 46.32 1 1 1 2666 2400 2133 1866 1600 (13.75) (13.75) (45.75) CCMTD-1725822587-9934 Micron Technology, Inc. reserves the right to change products or specifications without notice. 1 ass72c8gx72lz.pdf - Rev. G 8/19 EN 2015 Micron Technology, Inc. All rights reserved. Products and specifications discussed herein are subject to change by Micron without notice. Speed Grade64GB (x72, ECC, QR) 288-Pin DDR4 LRDIMM Features Table 1: Key Timing Parameters (Continued) Data Rate (MT/s) CL = t t t 20 18 16 14 12 10 RCD RP RC PC4- 24 22 21 19 17 15 13 11 9 ns ns ns -2G6 2666 2666 2400 2133 1866 1600 1333 14.25 14.25 46.25 1 1 1 2666 2400 2133 1866 1600 (13.75) (13.75) (45.75) -2G3 2400 2400 2133 1866 1600 1333 14.16 14.16 46.16 1 1 1 2400 2133 1866 1600 (13.75) (13.75) (45.75) -2G1 2133 2133 1866 1600 1333 14.06 14.06 47.06 1 1 1 2133 1866 1600 1333 (13.5) (13.5) (46.5) Note: 1. Down-bin timing, refer to component data sheet Speed Bin Tables for details. Table 2: Addressing Parameter 64GB Row address 128K A 16:0 Column address 1K A 9:0 Device bank group address 4 BG 1:0 Device bank address per group 4 BA 1:0 Device configuration 16Gb TwinDie (4 Gig x 4), 16 banks Module rank address 4 CS n 3:0 Table 3: Part Numbers and Timing Parameters 64GB Modules 1 Base device: MT40A4G4, 16Gb TwinDie DDR4 SDRAM Module Module Memory Clock/ Clock Cycles 2 Part Number Density Configuration Bandwidth Data Rate (CL- RCD- RP) n n MTA72ASS8G72LZ-2G9 64GB 8 Gig x 72 23.47 GB/s 0.682ns/2933 MT/s 21-21-21 MTA72ASS8G72LZ-2G6 64GB 8 Gig x 72 21.3 GB/s 0.75ns/2666 MT/s 19-19-19 MTA72ASS8G72LZ-2G3 64GB 8 Gig x 72 19.2 GB/s 0.83ns/2400 MT/s 17-17-17 Notes: 1. The data sheet for the base device can be found on micron.com. 2. All part numbers end with a two-place code (not shown) that designates component and PCB revisions. Consult factory for current revision codes. Example: MTA72ASS8G72LZ-2G9J1. CCMTD-1725822587-9934 Micron Technology, Inc. reserves the right to change products or specifications without notice. 2 ass72c8gx72lz.pdf - Rev. G 8/19 EN 2015 Micron Technology, Inc. All rights reserved. Speed Grade