EERAM memory delivers cost savings

By Gina Roos, editor-in-chief

Microchip Technology Inc. launched a new family of Serial Peripheral Interface (SPI) EERAM memory products that claims up to 25% cost savings over the current serial NVRAM devices. The new family introduces high-density SPI EERAMs, extending the portfolio from 64 Kbit up to 1 Mbit, and introduces the first SPI interface devices. These devices are used in applications from smart meters to manufacturing lines that require repetitive task data logging to be automatically restored if power is disrupted during processing.

EERAM memory uses the same SPI and I² C protocols as serial SRAM, enabling devices to retain SRAM content during power loss without using an external battery.

The primary reason that EERAM is available at a lower price point is the use of standard CMOS and flash processes, which are used at the highest volume and are the most widely used processes, said Microchip. In comparison, technologies such as ferroelectric RAM (FRAM) use a specialty process that results in higher costs and unstable supply, the company added.

The following devices are available in eight-pin SOIC, SOIJ, and DFN packages in volume production. All prices are for quantities of 10,000.

• 48L640 (64-Kbit SPI), starting at $0.70
• 48L256 (256-Kbit SPI), starting at $1.40
• 48L512 (512-Kbit SPI), starting at $2.10
• 48LM01 (1-Mbit SPI), starting at $2.90

Products are available through microchipDIRECT or one of Microchip’s authorized distributors. Microchip said that the EERAM family comes with its obsolescence practice , which helps ensure availability to customers for as long as needed.