Press Release Summary:
Offered in 24 models, Supervisor Chips, rated at 5 and 3/3.3 V, include power-on reset/low-voltage detect which monitors system power and resets system processor when voltage is out of tolerance. Some models include battery switchover circuit, which can be used to battery back other components in system. Most include PFI/PFO circuit, which implements early power-fail warning function or monitors second voltage supply. Chips come in lead-free, 8-pin SOIC package.
Original Press Release:
STMicroelectronics Introduces 24 Industry-Standard Supervisor Chips with Short High-Volume Lead Times
Drop-in replacements for many popular devices; ST's innovative production flow will reduce lead-times to as little as four weeks to keep manufacturers' lines moving
Geneva, October 15, 2004 - STMicroelectronics (NYSE: STM) has announced the availability of 24 industry standard supervisor chips, produced using an innovative manufacturing flow that will reduce lead times to as little as four weeks, compared to the typical 12 or more weeks of processing and assembly time required by other suppliers.
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 a non-volative 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 www.st.com/supervisor
STMicroelectronics is a global leader in developing and delivering 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. Further information on ST can be found at www.st.com.