ME-KD4E4V21x2 specification sheet

Overview:

This document describes ValueRAM's KVR21E15S8K2/8 is a kit of two 512M x 72-bit (4GB) DDR4-2133 CL15 SDRAM (Synchronous DRAM), 1Rx8, ECC, memory module, based on nine 512M x 8-bit FBGA components. Total kit capacity is 8GB.  The SPD is programmed to JEDEC standard latency DDR4-2133 timing of 15-15-15 at 1.2V. Each 288-pin DIMM uses gold
contact fingers.

Features:

• Power Supply: VDD=1.2V Typical
• VDDQ = 1.2V Typical
• VPP - 2.5V Typical
• VDDSPD=2.2V to 3.6V
• Nominal and dynamic on-die termination (ODT) for data, strobe, and mask signals
• Low-power auto self refresh (LPASR)
• Data bus inversion (DBI) for data bus
• On-die VREFDQ generation and calibration
• Dual-rank
• On-board I2 serial presence-detect (SPD) EEPROM
• Temperature sensor with integrated SPD
• 16 internal banks; 4 groups of 4 banks each
• Fixed burst chop (BC) of 4 and burst length (BL) of 8 via the mode register set (MRS)
• Selectable BC4 or BL8 on-the-fly (OTF)
• Fly-by topology
• Terminated control command and address bus
• PCB:  Height 1.23” (31.25mm)
• RoHS Compliant and Halogen-Free

Compatible Systems:

• DFI - SD631-C236 Motherboard
• Synology - RackStation RS3617xs+ / RS3617RPxs
• Synology - RackStation RS4017xs+

Specifications:

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Specifications
Product Code	ME-KD4E4V21x2
CL(IDD)	15 cycles
Row Cycle Time (tRCmin)	46.5ns(min.)
Refresh to Active/Refresh Command Time (tRFCmin)	260ns(min.)
Row Active Time (tRASmin)	33ns(min.)
Maximum Operating Power	TBD W
UL Rating	94 V - 0