Date: 08/10/2009

New serial nvSRAMs from Cypress Semiconductor in the range of 16Kb to 8Mb

Cypress Semiconductor has introduced a new 1-Mbit Serial non-volatile SRAM family and new 4/8-Mbit nvSRAMs with an integrated real-time clock (RTC). The suggested applications of nvSRAMs are RAID systems, industrial control and automation (e.g. PLCs, motion control, motor drives and robotics), single board computers, POS terminals, eMetering, automotive, medical and data communication systems.

The nvSRAMs use charge stored on an external capacitor instead of a battery, making the devices compatible with standard PCB assembly processes. The devices are available in 8-Mbit/3V, 4-Mbit/3V, 1-Mbit/5V, 1-Mbit/3V, 256-Kbit/3V, 256-Kbit/5V, 64-Kbit/5V and 16-Kbit/5V configurations. The nvSRAM family supports pin-compatible upgrades for additional density and real-time-clock requirements.

Cypress's nvSRAMs offers fast non-volatile data storage without batteries. Data transfers from the SRAM to the device's non-volatile elements take place automatically at power down. On power up, data is restored to the SRAM from the non-volatile memory. Both operations are also available under software control.

The serial nvSRAM family includes 1-Mbit devices in multiple configurations with an SPI interface and offers operating frequencies up to 40 MHz. And the parallel nvSRAMs feature access times of 20 ns, infinite read, write and recall cycles, and up to 20-years of data retention. The new 4-Mbit and 8-Mbit nvSRAMs integrate an RTC that enables time-stamping of critical data for back-up and also features a programmable alarm function and watchdog timer.

"Our new serial family extends Cypress's industry-leading nvSRAM portfolio to address applications that require high-endurance memories in industry-standard, low-pin count packages," said Jithender Majjiga, Senior Director of the Non-Volatile Products Business Unit at Cypress. "Likewise, integrating a real-time clock in our nvSRAMs enables our portfolio to cover applications traditionally served by BBSRAMs."

Package:

The 1-Mbit and 256-Kbit devices in small 32-pin SOIC and 48-pin SSOP package
The 8-Mbit, 4-Mbit, and 2-Mbit devices are in 48-pin FBGA, 44-pin TSOP II and 54-pin TSOP II package
The CY14B101Q1 and CY14B101Q2 devices in 8-pin DFN package
The CY14B101P serial device with RTC and the CY14B101Q3 are in a 16-pin SOIC package

Availability:
1-Mbit serial nvSRAMs are available in a 128k x 8 configuration and are currently in production.
The 4-Mbit nvSRAM with RTC comes in 512k x 8 (CY14B104K) and 256k x 16 (CY14B104M) configurations, and is currently in production.
The 8-Mbit nvSRAM with RTC comes in 1024k x 8 (CY14B108K) and 512k x 16 (CY14B108M) configurations and is currently sampling with production expected by early Q1 2010.

For more details visit www.cypress.com

Editorial product rating: Average