About CellularRAM™ Memory

The Team

The CellularRAM™ co-development group includes Cypress Semiconductor Corporation (NYSE: CY), Micron Technology, Inc. (NYSE: MU0), Qimonda, Renesas Technology Corporation, Etron Technologies, Hynix Semiconductor (KSE:000660.KS), Enable, Silicon 7 and Winbond Electronics Corporation (Taiwan:2344.TW). Together, these companies have agreed to collaborate in the development of the specifications for CellularRAM memory, a multi-generation family of low-power pseudo-static RAM (PSRAM) for wireless handsets.
The purpose of this co-development effort is to provide customers with pin- and function-compatible products from multiple sources, based on a jointly developed specification for CellularRAM devices. Each company will design and manufacture the products using their own design and process technology.

The Technology

CellularRAM is a multi-generation family of low-power pseudo-static RAM (PSRAM) for wireless handsets. CellularRAM memory is designed to meet the growing memory and bandwidth demands of future handset designs. In addition to offering a lower cost/bit ratio than current solutions, this type of Pseudo SRAM features a SRAM-pin compatibility, refresh-free operation and a low-power design.
Compatibility: 
Asynchronous CellularRAM devices are backward compatible with standard SRAM devices. They have the same voltage range, package, and ball assignment. Designers will have a smooth transition from SRAM to CellularRAM.
Power Consumption:
While CellularRAM is based on DRAM technology, the power consumption is comparable to SRAM devices.
Innovative Interface:
The CellularRAM family supports asynchronous/page modes, as well as an innovative burst interface that is fully compatible with the low-power Flash interface.
Performance:
The asynchronous/page version access time target is 70ns. CellularRAM with burst access mode will support a burst rate of up to 133 MHz.
Cost:
The price/bit of CellularRAM will be significantly lower than an SRAM device with a corresponding density and technology node.

Learn more about the CellularRAM Working Group.