The **M3A62TCG-R** is a high-performance memory module manufactured by **Innodisk**. It is specifically an Industrial-grade DDR3L SDRAM module designed for server and workstation applications. --- ## 1. Technical Specifications The following table outlines the core electronic and physical characteristics of the M3A62TCG-R: | Component/Feature | Specification | | :--- | :--- | | **Memory Type** | DDR3L (Low Voltage) | | **Form Factor** | VLP ECC Register DIMM (Very Low Profile) | | **Capacity** | 16GB | | **Data Rate** | 1600 MT/s (PC3L-12800) | | **Voltage** | 1.35V (Backward compatible with 1.5V) | | **Pin Count** | 240-pin | | **CAS Latency** | CL11 | | **Rank** | Dual Rank (2Rx4) | | **Operating Temp** | 0°C to +85°C | --- ## 2. Key Electronic Components ### A. DRAM Integrated Circuits (ICs) The module utilizes high-density DDR3L SDRAM chips. As a **2Rx4** module, it uses a specific organization of memory banks to achieve 16GB of density. Being "Low Voltage" (1.35V), these chips consume significantly less power and generate less heat than standard 1.5V DDR3 chips. ### B. Registering Clock Driver (RCD) Since this is a **Registered DIMM (RDIMM)**, it includes a buffer (register) between the system memory controller and the DRAM chips. - **Function:** It buffers the command, address, and control signals. - **Benefit:** Reduces the electrical load on the memory controller, allowing for higher system stability and greater total memory capacity in a single server. ### C. Error Correction Code (ECC) The module includes additional bits (64-bit data + 8-bit ECC) to detect and correct data corruption. - It can correct **Single-bit errors** and detect **Multi-bit errors**, which is critical for preventing system crashes in enterprise environments. ### D. SPD (Serial Presence Detect) EEPROM A small non-volatile memory chip on the PCB that stores information about the module's timings, voltage, and manufacturer data. The system BIOS reads this via the I2C/SMBus interface at startup to configure the memory controller. --- ## 3. Physical Layout: VLP Design The **VLP (Very Low Profile)** designation means the height of the PCB is significantly shorter than standard DIMMs (usually around 18.75mm). - **Application:** This is electronically significant because it allows for better airflow in dense 1U blade servers and minimizes electromagnetic interference (EMI) in cramped spaces. ---