ST INTRODUCES 24 INDUSTRY-STANDARD SUPERVISOR CHIPS.
These 5V and 3/3.3V supervisors are suitable for virtually all applications. Anything that requires monitoring is a candidate for these chips including medical equipment, metering, servers, ADSL, point-of-sale, NVRAM, automotive, instrumentation and industrial hardware. All 24 devices include multiple supervisor functions. Common to all is Power-On Reset/Low-Voltage Detect, which monitors the system power and resets the system processor when the voltage is out of tolerance. A Watchdog, such as on the STM690A and several others, protects the system against runaway software.
Many of the parts, such as the STM706, have a Manual Reset Input. The STM802, like most of the others, includes a Battery Switchover circuit which can be used to battery back other components in the system. Coupled with a coin cell battery, the Switchover circuit turns a low-power SRAM into an NVRAM automatically switching to the battery when Vcc fails. Perfect for NVRAM applications, the STM795 also includes a Chip-Enable Gate (Write-Protect) function.
Active-high and active-low Reset output polarities are offered, and the STM707 and 708 include both. Most of the parts include a PFI/PFO circuit (Power-Fail In/Power-Fail Out) which can be used to implement an Early Power-Fail Warning function or to monitor a second voltage supply. All the 3/3.3V parts include options for 2.63V, 2.93V and 3.08V reset thresholds while the 5V parts offer 4.4V and 4.65V threshold options. Counting all the voltage options, there are 46 different part numbers.
These chips are offered in a lead-free 8-pin SOIC package with an 8-pin TSSOP available in Q1 2005. They operate over the industrial temperature range (40 to +85 degrees C) and are 100% pin-compatible drop-ins to parts commonly available throughout the industry.
Samples of the all 24 devices available through ST sales offices and distributors now. At mid-range volume, US pricing ranges from $0.25 for the STM706 to $1.30 for the STM795.
Further information on ST's Reset and Supervisor family is available at http://www.st.com/supervisor.
STMicroelectronics is a developer of semiconductor solutions across the spectrum of microelectronics applications. An unrivalled combination of silicon and system expertise, manufacturing strength, Intellectual Property (IP) portfolio and strategic partners positions the company at the forefront of System-on-Chip (SoC) technology and its products play a key role in enabling today's convergence markets. The company's shares are traded on the New York Stock Exchange, on Euronext Paris and on the Milan Stock Exchange. In 2003, the company's net revenues were $7.24 billion and net earnings were $253 million.
STMicroelectronics can be found on the World Wide Web at http://www.st.com/.
For more information, call 212/821-8939 or +41-22-929-69-73.
|Printer friendly Cite/link Email Feedback|
|Date:||Dec 1, 2004|
|Previous Article:||NATIONAL SEMICONDUCTOR EXPANDS GATE DRIVER FAMILY.|
|Next Article:||NEC UNVEILS MELODY CHIP WITH MP3 AND AAC PLAYBACK SUPPORT.|