The **H5TC4G83CFR-RDA** is a high-performance, low-voltage synchronous dynamic random-access memory (**DDR3L SDRAM**) manufactured by SK Hynix. It is commonly used in PCs, servers, and embedded systems where high density and low power consumption are required. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Density** | 4 Gigabits (4Gb) | | **Organization** | 512M x 8 bits | | **Type** | DDR3L (Double Data Rate 3 Low Voltage) | | **Voltage (Vdd)** | 1.35V (Standard) / 1.5V (Compatible) | | **Speed Grade** | DDR3-1600 (PC3-12800) | | **CAS Latency (CL)** | 11 | | **Package Type** | 78-ball FBGA (Fine-pitch Ball Grid Array) | | **Operating Temp** | 0°C to 95°C (Commercial) | --- ### 2. Functional Characteristics * **Low Power (DDR3L):** This chip operates primarily at **1.35V**, which reduces power consumption by approximately 20% compared to standard 1.5V DDR3 memory. It is backward compatible with 1.5V systems. * **8-bit Prefetch Architecture:** It uses an 8n-prefetch architecture to achieve high-speed data transfer. * **Differential Clocking:** Uses differential clock inputs (CK, /CK) to maintain timing synchronization and minimize noise. * **On-Die Termination (ODT):** Includes internal resistors to improve signal integrity by reducing reflections on the data bus. * **Refresh Cycles:** Supports Auto-Refresh and Self-Refresh modes to maintain data integrity. --- ### 3. Part Number Decoding The part number **H5TC4G83CFR-RDA** can be broken down as follows: * **H5TC:** SK Hynix Low Voltage DDR3 SDRAM (1.35V). * **4G:** 4 Gigabit Density. * **8:** 8-bank memory architecture. * **3:** x8 Organization (Data bus width). * **C:** 3rd Generation (Die Revision). * **FR:** Lead-Free & Halogen-Free (RoHS compliant). * **RD:** Speed grade (1600 Mbps / CL11). * **I/A:** Temperature Grade (I = Industrial / A = Commercial). --- ### 4. Typical Applications * **Computing:** Laptop and Desktop RAM modules (SODIMMs/UDIMMs). * **Networking:** Routers, switches, and hardware firewalls. * **Embedded Systems:** Industrial PCs, digital signage, and smart IoT gateways. * **Consumer Electronics:** Smart TVs and set-top boxes.