2011年第四季度,DDR3最新进展,尔必达出品,25nm工艺,单颗粒最大512MB!

2011年第四季度,尔必达在DDR3方面有新进展,采用25nm工艺,单颗粒最大容量达512MB。
2011年第四季度,DDR3最新进展,尔必达出品,25nm工艺,单颗粒最大512MB!
### 1866速率 512Mb × 8 DDR3芯片的型号列表及相关规格 DDR3内存以其高带宽和较低功耗的特点被广泛应用。针对1866MHz速率、容量为512Mb × 8bit配置的DDR3芯片,以下是部分常见型号及其具体规格描述: #### 型号与厂商 - **Micron MT41K512M8HA-125**: 此款由美光科技生产的DDR3 SDRAM具有以下特点: - 工作频率:1866 MHz (PC3-14900)[^1] - 容量:512 Mb × 8 bit = 64 MB[^2] - CAS延迟(CL):11[^3] - 数据宽度:x8[^4] - **Samsung K4B2G164QH-DGCJ**: 来自三星的一款高性能DDR3 DRAM模块具备如下属性: - 主频:1866 MHz[^5] - 总存储大小:同样为512 Mb per chip * 8 bits/chip = 64 MB total per die[^6] - CL设定值:典型条件下为11 cycles at JEDEC standard settings[^7] - 接口模式:标准DDR3 interface with burst length of 8 or 4 supported[^8] - **Elpida EDEA1BG8ABAE-1G-AF**: 另一知名品牌尔必达也提供了类似的解决方案: - 频率性能达到1866MT/s level operation as specified by JEDEC standards[^9] - 颗粒储存能力维持在512 Mbits multiplied across eight channels equals to an effective capacity of sixty-four megabytes[^10] - Timing parameters including but not limited to tRCD, tRP set according industry benchmarks ensuring optimal performance under various workloads scenarios.[^11] #### 技术细节补充说明 - **Bank Architecture**: 多数此类器件采用的是8-bank architecture design which helps improve overall system throughput and efficiency when handling multiple memory requests simultaneously[^12]. - **Power Supply Requirements**: Standard operating voltage is kept around 1.5V ±0.075V range while reduced power variant known as &#39;DDR3L&#39; operates slightly lower voltages approximately within the vicinity of ~1.35Volts +/- same tolerance margin mentioned earlier above.[^13] ```cpp /* Example Code Snippet Demonstrating Basic Initialization Sequence For A Generic DDR Controller */ #include <stdint.h> void initialize_ddr(uint32_t freq_mhz){ /* Set up clock divider based on target frequency */ const float ideal_ratio = static_cast<float>(freq_mhz)/1866; uint32_t clk_divider_setting = compute_closest_clock_divisor(ideal_ratio); configure_pll(clk_divider_setting); /* Apply timing configurations corresponding to selected speed grade */ apply_jedec_timings_for_speed_grade(freq_mhz); } int main(){ // Initialize controller targeting 1866MHz operational point. initialize_ddr(1866); return EXIT_SUCCESS; } ``` ---
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