The 256-Mbit DDR mobile RAM devices offer a bandwidth of 400-Megabytes per second, Elpida said. The devices are made using a 0.11-micron manufacturing process technology and deliver a 90 percent reduction compared to a common 256 Megabit DDR SDRAM , and a 10 percent space reduction compared to design implementations that utilize two 128-Mbit Mobile RAM devices.

Both devices have been developed for digital consumer products such as mobile phones, PDAs, handheld PCs, and digital cameras.

The Mobile SDRAM devices are organized as 4M words x 16 bits x 4 banks, and have a programmable burst length of 2, 4, 8 words. They operate on a power supply of VDD/VDDQ: 1.8V +/- 0.15V and are packaged in a 9 mm x 13 mm, small FBGA package.

An Auto Temperature-Compensated Self Refresh (ATCSR) function allows the devices' internal self-refresh timer to be set automatically, further decreasing power consumption.

The products are also available as a "bare die" suitable for implementation in System-in-Package (SiP) or Multi-Chip-Package (MCP) designs.

By: Docmemory
Copyright © 2023 CST, Inc. All Rights Reserved