This document describes ValueRAM's KVR26S19S6/4 as a 512M x 64-bit (4GB) DDR4-2666 CL19 SDRAM (Synchronous DRAM), 1Rx16, memory module, based on four 512M x 16-bit FBGA components. The SPD is programmed to JEDEC standard latency DDR4-2666 timing of 19-19-19 at 1.2V. This 260-pin SODIMM uses gold contact fingers. The electrical and mechanical specifications are as follows:

• 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

• Single-rank

• On-board I2 serial presence-detect (SPD) EEPROM

• 8 internal banks; 2 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 1.18” (30.00mm)

• RoHS Compliant and Halogen-Free