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SDRAM Extends Battery Life In Mobile Devices

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SDRAM Extends Battery Life In Mobile Devices

Alliance Memory has rolled out a new high-speed CMOS mobile low-power DDR3 (LPDDR3) SDRAM designed to extend battery life in compact portable devices uch as smartphones, tablets, and virtual and augmented reality (VR and AR) headsets.

Featuring low voltage operation of 1.2V/1.8V and a number of power-saving features, the 16Gb AS4C512M32MD3 is offered in the 11 x 11.5mm 178-ball FBGA package.

The LPDDR3 device features auto temperature-compensated self-refresh (TCSR) to minimize power consumption at lower ambient temperatures.

In addition, the memory features a partial-array self-refresh (PASR) feature which 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.

“Reducing IC power consumption can directly increase battery life in portable devices, so the applications for LPDDR3 SDRAMs in the consumer and mobile communication markets continue to grow,” said David Bagby, president and CEO of Alliance Memory. “At the same time, the number of suppliers for these devices is decreasing. Alliance Memory is offering designers a new alternative and shorter lead times for the low power consumption they require. Devices such as our new 16Gb AS4C512M32MD3 provide reliable drop-in, pin-for-pin-compatible replacements for a number of similar solutions in high-bandwidth, high-performance memory system applications.”

Manufactured using a 20nm process, the AS4C512M32MD3 is internally configured as 8 banks x 32 Mbit x 32. The device offers high-speed operation with a clock frequency of 667MHz and data rate of 1333Mbps, and it features an extended commercial temperature range of -25°C to +85°C.

The LPDDR3 SDRAM offers fully synchronous operation and 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 device is lead (Pb)- and halogen-free.

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Samples and production quantities of the new LPDDR3 are available now, with lead times of four to six weeks for production quantities.

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