News Release from: STMicroelectronics
Edited by the Electronicstalk Editorial Team on 18 October 2004
Speedy access to system supervisor devices
A new family of 24 industry standard supervisor chips is produced using an innovative manufacturing flow that will reduce lead times to as little as four weeks.
Note: Readers of the Editor’s free email newsletter will have read this news when it was announced. . It’s free!
A new family of 24 industry standard supervisor chips is produced using an innovative manufacturing flow that will reduce lead times to as little as four weeks, compared with the typical 12 or more weeks of processing and assembly time required by other suppliers. These 5 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 number of the devices feature a watchdog to protect systems 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 nonvolative NVRAM automatically switching to the battery when the supply 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 2.63, 2.93 and 3.08V reset thresholds, and the 5V parts offer 4.4 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 +85C) and are 100% pin-compatible drop-in replacements for parts commonly available throughout the industry.
Samples of the all 24 devices are available now through ST sales offices and distributors.
At mid-range volumes, US pricing ranges from $0.25 for the STM706 to $1.30 for the STM795.
• STMicroelectronics: contact details and other news
• Other news in Analogue and Mixed Signal ICs
• Email this news to a colleague
•
• RSS news feed for STMicroelectronics
• RSS news feed for Analogue and Mixed Signal ICs
• Electronicstalk Home Page
Copyright © 2000-2006 Pro-Talk Ltd, UK. Based on news supplied by STMicroelectronics - Subject: STM 7xx industry standard supervisor chips