DESCRIPTION
This document describes ValueRAM's 1G x 64-bit (8GB) DDR3- 1600 CL11 SDRAM (Synchronous DRAM) 2Rx8, memory module, based on sixteen 512M x 8-bit FBGA components. The SPD is programmed to JEDEC standard latency DDR3-1600 timing of 11-11-11 at 1.5V. This 240-pin DIMM uses gold
contact fingers. The electrical and mechanical specifications are as follows:
FEATURES
• JEDEC standard 1.5V Power Supply • VDDQ = 1.5V
• 800MHz fCK for 1600Mb/sec/pin
• 8 independent internal banks
• 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 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°Co
• Asynchronous Reset
• PCB: Height 0.740” (18.75mm) or 1.180” (30.00mm)
SPECIFICATIONS
CL(IDD)
Row Cycle Time (tRCmin)
Refresh to Active/Refresh Command Time (tRFCmin)
Row Active Time (tRASmin) UL Rating
Operating Temperature Storage Temperature
11 cycles 48.125ns(min.) 260ns(min.)
35ns(min.)
94 V - 0
0o C to +85o C -55o C to +100o C