This document describes ValueRAM's 512M x 64-bit (4GB) DDR3-1333 CL9 SDRAM (Synchronous DRAM), 1Rx8 memory module, based on eight 512M x 8-bit DDR3-1333 FBGA components. The SPD is programmed to JEDEC standard latency DDR3-1333 timing of 9-9-9 at 1.5V. This 240-pin DIMM uses gold contact fingers. The electrical and mechanical specifications are as follows:



Features:




??? JEDEC standard 1.5V (1.425V ~1.575V) Power Supply

??? VDDQ = 1.5V (1.425V ~ 1.575V)

??? 667MHz fCK for 1333Mb/sec/pin

??? 8 independent internal bank

??? Programmable CAS Latency: 9, 8, 7, 6

??? Programmable Additive Latency: 0, CL - 2, or CL - 1 clock

??? Programmable CAS Write Latency(CWL) = 7 (DDR3-1333)

??? 8-bit pre-fetch

??? Burst Length: 8 (Interleave without any limit, sequential with starting address ???000??? only), 4 with tCCD = 4 which does not allow seamless read or write [either on the fly using A12 or MRS]

??? Bi-directional Differential Data Strobe

??? Internal(self) calibration: Internal self calibration through ZQ pin (RZQ : 240 ohm ?? 1%)

??? On Die Termination using ODT pin

??? Average Refresh Period 7.8us at lower than TCASE 85??C, 3.9us at 85??C < TCASE < 95??C

??? Asynchronous Reset

??? PCB: Height 0.740??? (18.75mm), single sided component