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DESCRIPTIONThis document describes ValueRAM's 512M x 64-bit (4GB)DDR3-1600 CL11 SDRAM (Synchronous DRAM) 1Rx8, memorymodule, based on eight 512M x 8-bit FBGA components. TheSPD is programmed to JEDEC standard latency DDR3-1600timing of 11-11-11 at 1.5V. This 240-pin DIMM uses goldcontact fingers. The electrical and mechanical specificationsare as follows:FEATURES• JEDEC standard 1.5V (1.425V ~1.575V) Power Supply• VDDQ = 1.5V (1.425V ~ 1.575V)• 800MHz fCK for 1600Mb/sec/pin• 8 independent internal bank• Programmable CAS Latency: 11, 10, 9, 8, 7, 6• Programmable Additive Latency: 0, CL - 2, or CL - 1 clock• 8-bit pre-fetch• Burst Length: 8 (Interleave without any limit, sequential withstarting address “000” only), 4 with tCCD = 4 which does notallow seamless read or write [either on the fly using A12 orMRS]• Bi-directional Differential Data Strobe• Internal(self) calibration : Internal self calibration through ZQpin (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 1.180” (30.00mm), single sided componentDocument No. VALUERAM1276-001.A00 01/28/13 Page 1Memory Module Specifi cationsSPECIFICATIONSCL(IDD) 11 cyclesRow Cycle Time (tRCmin) 48.125ns (min.)Refresh to Active/Refresh 260ns (min.)Command Time (tRFCmin)Row Active Time (tRASmin) 35ns (min.)Maximum Operating Power 2.160 W*UL Rating 94 V - 0Operating Temperature 0o C to 85o CStorage Temperature -55o C to +100o C*Power will vary depending on the SDRAM used.
