日期：2007-09-20 来源：

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 — 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.

COLORADO SPRINGS, CO — 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.

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 www.ramtron.com/vrs3xxx/.

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 resolution. 

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 www.ramtron.com.

For a 300-dpi product photo, visit www.ramtron.com/doc/Press/Images.asp.