SOURCE: Ramtron International Corporation

September 18, 2007 09:30 ET

Ramtron Extends Versa 8051 Family With 2KB F-RAM MCU

Nonvolatile Data Storage/Processing System Is Ideal for Saving System Status, Data Logging, and Storing Nonvolatile Variables in a Range of Applications

COLORADO SPRINGS, CO--(Marketwire - September 18, 2007) - Ramtron International Corporation (NASDAQ: RMTR), a leading developer and supplier of nonvolatile ferroelectric random access memory (F-RAM) and integrated semiconductor products, today launched the VRS51L3072, an 8051-based microcontroller with 2KB of nonvolatile F-RAM memory. Ramtron has added F-RAM to its fast and flexible Versa 8051s for a quick and reliable nonvolatile data storage and processing system that is ideal for saving system status, data logging, and storing nonvolatile variables in a range of applications from sensors and meters to industrial controls, instrumentation and medical devices.

"We have expanded the Versa 8051 family with the 2KB F-RAM MCU for our customers who require a lower density F-RAM for real-time data collection and storage. The high-performance core in the VRS51L3072 controls peripherals and gathers data, and its onboard digital signal processing (DSP) functions process the data, which is then stored in F-RAM," says David Lee, Ramtron International Strategic Marketing Manager. "Pin-compatible with our 8KB F-RAM MCUs, it's a cost effective alternative for applications that require less than 8KB of F-RAM."

F-RAM instead of Flash/EEPROM for nonvolatile data storage

F-RAM simplifies the design cycle by eliminating the code overhead accompanying Flash data storage, and the limited endurance and drawn out write cycles of Flash/EEPROM. Unlike Flash, F-RAM bytes can be modified without first erasing an entire sector, rendering it easier to use. And unlike Flash/EEPROM, F-RAM provides virtually unlimited read/write cycles and fast data writes.

The VRS51L3072 combines 2KB of F-RAM with a fully integrated, high-performance system-on-chip. Features include an advanced 40-MIPS, single-cycle 8051-core, 64KB Flash with in-system/in-application programming, 4KB SRAM, DSP extensions, and a robust digital peripheral set. Operating at 3.3 volts over the entire industrial temperature range, the VRS51L3072 is the ideal embedded data acquisition solution for a wide array of advanced applications.

For more information about the VRS51L3072, please visit

VRS51L3072 Features

     2KB F-RAM: 2048 bytes of true nonvolatile RAM (no battery/super cap
     required to maintain data) mapped into the VRS51L3072's XRAM memory
     for easy access, fast writes and essentially unlimited endurance.

     40MHz, Single-Cycle 8051 Processor: One of the fastest 8-bit
     processors on the market, its advanced core can deliver up to 40 MIPS
     throughput and is instruction-compatible with standard 8051s for
     smooth device migration.

     MULT/ACCU/DIV Unit with 32-bit Barrel Shifter: This hardware
     calculation engine significantly outperforms 8-bit processors when
     executing DSP operations (FIR filtering, sensor output linearization,
     multiple-byte arithmetic operations, etc).  It performs 16-bit signed
     multiplication and 32-bit addition in one cycle and 16-bit signed
     division in five cycles.  The barrel shifter enables logic/arithmetic
     shift operations.

     40MHz Internal Oscillator: The internal oscillator cuts system costs
     by eliminating the need for an external crystal oscillator.

     USB-JTAG Interface: For user-friendly and quick device programming and
     real-time, in-circuit debugging/emulation of the user application
     without the need for a costly emulator.

     Dual UARTs with Baud Rate Generator: The universal asynchronous
     receiver/transmitters operate at up to 1.25 Mbps.  Each UART
     incorporates a dedicated baud rate generator with 20-bit equivalent

     Enhanced SPI: The communication speed on the serial peripheral
     interface can be configured up to 20 Mbps and transactions are
     adjustable from 1 to 32 bits.

     PWCs: Two pulse width counter modules provide advanced timer control,
     simplifying event duration measurement.

     PWMs: Eight pulse width modulators with 16-bit adjustable resolution.
     Each PWM includes its own timer, which can also be used as general
     purpose timers.

Other support peripherals include an I²C interface, three 16-bit general purpose timers/counters with three timer capture inputs, a watchdog timer, and 49 interrupts that share 16 interrupt vectors.

Pricing and Availability

Engineering samples of the VRS51L3072 are available now. The device is packaged in a RoHS-compliant 64-QFN. Unit pricing starts at $4.50 for quantities of 10,000 units.

About Ramtron

Ramtron International Corporation, headquartered in Colorado Springs, Colorado, is a fabless semiconductor company that designs, develops and markets specialized semiconductor memory and integrated semiconductor solutions used in a wide range of product applications and markets worldwide. For more information, visit

For a 300-dpi product photo, visit

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