Samsung Semiconductor

K4A4G085WE-BCRC

A: This device operates from a single 1.2V power supply, which is the standard voltage for DDR4 technology, enabling lower power consumption compared to previous DDR3 generations. It supports a maximum clock rate of 2400 MHz, corresponding to a data transfer rate of 2400 Mbps. Featuring 16 internal memory banks, it also includes advanced features such as an on-die termination (ODT) and data bus inversion (DBI) for enhanced signal integrity. The table below summarizes its key technical specifications: Specification Value Memory Type DDR4 SDRAM Memory Size 4 Gbit (512 MB) Memory Organization 512M x 8 (512 million words × 8 bits) Data Transfer Rate 2400 Mbps (DDR4-2400) Internal Banks 16 Supply Voltage 1.2V (1.14V to 1.26V) Operating Current 90 mA Operating Temperature 0°C to 95°C (Commercial Grade) Package Type 78-pin FBGA Mounting Type Surface Mount

A: The K4A4G085WE-BCRC uses a standard DDR4 parallel interface (POD) for high-speed data transfer. The 8-bit wide data bus helps simplify PCB routing while providing sufficient bandwidth for memory-intensive applications. The device features a 17-bit address bus, which together with its dual 16-bank architecture allows efficient access to the 4Gb memory array. The interface includes signals for data (DQ), address and command (CA), clock (CK_t/CK_c), and control lines such as chip select (CS_n), clock enable (CKE) and on-die termination (ODT).

A: As a volatile memory device (DRAM), the K4A4G085WE-BCRC is designed for temporary data storage and requires constant power to retain information. It does not use conventional "endurance" metrics like program/erase cycles found in non-volatile Flash memory; instead, its reliability is characterized by factors such as operating temperature range, refresh requirements and data retention time within the operating temperature range. The device is rated for a commercial operating temperature range of 0°C to 95°C, which defines its operational envelope. It supports auto-refresh and self-refresh features; while the data retention time is not specified in the available short-form datasheets, the 1.2V typical supply voltage ensures operation is within stable conditions to maintain memory integrity under normal operating conditions.

A: The K4A4G085WE-BCRC is used in applications requiring high-speed memory with moderate capacity and low power. Typical applications include: Desktop and laptop computers systems where it serves as main system memory Server systems that require reliable, high-bandwidth memory Networking equipment and telecommunications devices such as routers and switches Consumer electronics, including gaming consoles and smart devices High-performance computing and data-centric applications such as workstations The product status and lifecycle information: According to numerous redistributor and online source information, the K4A4G085WE-BCRC is often listed as Active or in mass production. However, some sources currently list it as End of Life (EOL) or Obsolete. In its 4Gbit generation, the market already has newer and larger-density successors available, and it is strongly recommended for you to consult with the latest manufacturer documentation or an authorized distributor to confirm up-to-date production availability, lifecycle status and proper substitution before committing it to new designs.