High speed SDRAMs increase portable electronics battery life

Posted By : Alice Matthews
High speed SDRAMs increase portable electronics battery life

A new line of high-speed CMOS mobile low-power DDR2 (LPDDR2) SDRAMs has been introduced by Alliance Memory. They have densities of 1Gb, 2Gb, and 4Gb in the 134-ball FBGA package. The devices offer a variety of power-saving features, including 1.2/1.8V operating voltages, to extend battery life in portable electronics, while their high density enables slim designs. The LPDDR2 SDRAMs provide reliable drop-in, pin-to-pin compatible replacements for a number of similar solutions in ultra-low-voltage cores and I/O power supplies for mobile devices such as smartphones and tablets.

For these products, the ICs feature auto Temperature-Compensated Self-Refresh (TCSR) to minimise power consumption at lower ambient temperatures. In addition, their Partial-Array Self-Refresh (PASR) feature reduces power by only refreshing critical data, while a Deep Power Down (DPD) mode provides an ultra-low power state when data retention isn't required.

Featuring a double data rate four-bit prefetch architecture, the LPDDR2 SDRAMs deliver high-speed operation with clock rates of 400 and 533MHz, and are available in commercial (-30 to 85°C) and industrial (-40 to 85°C) temperature ranges. The devices offer programmable read or write burst lengths of 4, 8, or 16; an auto pre-charge function provides a self-timed row pre-charge initiated at the end of the burst sequence. Easy-to-use refresh functions include auto- or self-refresh. The RoHS-compliant ICs are lead (Pb)- and halogen-free.

Alliance Memory offers an extensive line-up of mobile low-power SDRAMs to help designers meet the demand for reduced power consumption in portable electronics, including 64, 128, 256, 512M, and 1GB LPDDR1 SDRAMs and 16GB LPDDR3 SDRAMs. 8GB 256M x 32 LPDDR2 SDRAMs in the 134-ball FBGA package will also be available soon.

Downloads


You must be logged in to comment

Write a comment

No comments




Sign up to view our publications

Sign up

Sign up to view our downloads

Sign up

SPS IPC Drives 2019
26th November 2019
Germany Nuremberg Messe
Vietnam International Defense & Security Exhibition 2020
4th March 2020
Vietnam National Convention Center, Hanoi