TI Introduces Industry's First Supervisory Circuits That Allow Low-Power Processors to Run Either From Main Supply or Backup Battery

New Devices Allow Designers to Maintain Proper Data Processing and Increase

System Reliability for Low-Power Processors



Apr 18, 2001, 01:00 ET from Texas Instruments Incorporated Semiconductor Group

    DALLAS, April 18 /PRNewswire/ -- Designers now have additional design
 flexibility when working with low power processors in high-performance
 electronic systems thanks to a new family of highly integrated supervisory
 circuits (SVS) announced today from Texas Instruments Incorporated
 (NYSE:   TXN) (TI).  Unlike other supervisors found on the market today, these
 new devices offer the industry's first backup battery function that is capable
 of switching to a backup battery without asserting a RESET beforehand, which
 allows operation to continue uninterrupted with backup power.  In case of
 system power failure, these supervisors switch automatically to battery backup
 power allowing the device to run its low-power processor and peripherals while
 safeguarding memory contents in a wide range of battery- and line-powered
 applications, such as fax machines, mobile phones, PDAs and other consumer
 electronic devices.  (See power.ti.com/aap6167u.)
     This new family, the TPS360x and TPS361x supervisors, will monitor and
 control the activity of low-power processors being used in high-performance
 applications that are powered by a main power supply or a battery.  If the
 system voltage fails, the TPS360x will allow the device to run its low-power
 processor and its peripherals from the installed backup battery without
 asserting a RESET beforehand.  When switching to backup battery in case the
 system voltage fails, the TPS361x will assert Reset and only sustain the
 content of a connected RAM.  This added design flexibility allows designers to
 choose between options needed to maintain proper data processing.  This
 feature along with an integrated delay time, watchdog timer and chip-enable
 gating make them ideal for applications using low-power DSPs or
 microcontrollers, such as TI's 1.8V 'C54x and MSP430 families.
     "Power backup for low-power controllers and processors is increasingly
 important in the mobile systems appearing today," said Giovanna Monari,
 strategic product marketing engineer for TI's supervisory circuits.  "TI's
 highly integrated TPS360x supervisors enable backup without system reset,
 permitting the continued, uninterrupted use of applications when the main
 source of battery power in a system fails."
 
     High Level of Integration
     The TPS360x/361x SVS devices lower component count and reduce board space
 by integrating several functions while requiring no external devices for
 implementation.  An integrated delay of 100 milliseconds (ms) when system
 power returns allows the supply voltage and internal oscillator to stabilize
 before power is returned from the backup to the main source.  During intervals
 of power instability, an integrated chip-enable gating function disconnects
 the RAM to prevent erroneous data writes.  To maintain system integrity, a
 watchdog timer monitors the processor and issues a reset after a period of no
 activity.
     The SVS devices also feature a "freshness seal" that shuts off power
 drainage when the system is stored before use, enabling retail products to
 stay fully charged on the shelf until the device is purchased.  To simplify
 development and speed time-to-market, an evaluation module (EVM) is available
 that demonstrates how the TPS360x SVS functions with TI's low-power MSP430
 microcontroller.  In addition, the devices include a manual switchover pin to
 aid in development and testing.
 
     Availability, Packaging and Pricing
     Samples of TPS360x/361x supervisors are available now from TI and its
 authorized distributors.  The following table provides the voltage options,
 packaging, suggested resale pricing and availability for both the devices.
 
 
       Device     Voltage         Package    Scheduled    Suggested Resale
                  options                   availability     Pricing
                                                         (ea. in 1,000 qty.)
      TPS3600    2, 3.3, 5 V    14-pin TSSOP    NOW           $2.35
      TPS3606    3.3 V          10-pin MSOP     NOW           $1.84
      TPS3610    1.8, 5 V       14-pin TSSOP    NOW           $2.15
      TPS3613    Adjustable     10-pin MSOP     NOW           $1.67
      TPS3617    5 V            8-pin MSOP      NOW           $1.25
      TPS3619    3.3, 5 V       8-pin MSOP    MAY '01         $1.15
 
 
     Texas Instruments Incorporated is the world leader in digital signal
 processing and analog technologies, the semiconductor engines of the Internet
 age.  The company's businesses also include sensors and controls, and
 educational and productivity solutions.  TI is headquartered in Dallas, Texas,
 and has manufacturing or sales operations in more than 25 countries.
     Texas Instruments is traded on the New York Stock Exchange under the
 symbol TXN.  More information is located on the World Wide Web at:
 http://www.ti.com.
 
      Please refer all reader inquiries to:  Texas Instruments Incorporated
                                             Semiconductor Group, SC-01085
                                             Literature Response Center
                                             P.O. Box 954
                                             Santa Clarita, CA  91380
                                             1-800-477-8924, ext. 4500
 
 

SOURCE Texas Instruments Incorporated Semiconductor Group
    DALLAS, April 18 /PRNewswire/ -- Designers now have additional design
 flexibility when working with low power processors in high-performance
 electronic systems thanks to a new family of highly integrated supervisory
 circuits (SVS) announced today from Texas Instruments Incorporated
 (NYSE:   TXN) (TI).  Unlike other supervisors found on the market today, these
 new devices offer the industry's first backup battery function that is capable
 of switching to a backup battery without asserting a RESET beforehand, which
 allows operation to continue uninterrupted with backup power.  In case of
 system power failure, these supervisors switch automatically to battery backup
 power allowing the device to run its low-power processor and peripherals while
 safeguarding memory contents in a wide range of battery- and line-powered
 applications, such as fax machines, mobile phones, PDAs and other consumer
 electronic devices.  (See power.ti.com/aap6167u.)
     This new family, the TPS360x and TPS361x supervisors, will monitor and
 control the activity of low-power processors being used in high-performance
 applications that are powered by a main power supply or a battery.  If the
 system voltage fails, the TPS360x will allow the device to run its low-power
 processor and its peripherals from the installed backup battery without
 asserting a RESET beforehand.  When switching to backup battery in case the
 system voltage fails, the TPS361x will assert Reset and only sustain the
 content of a connected RAM.  This added design flexibility allows designers to
 choose between options needed to maintain proper data processing.  This
 feature along with an integrated delay time, watchdog timer and chip-enable
 gating make them ideal for applications using low-power DSPs or
 microcontrollers, such as TI's 1.8V 'C54x and MSP430 families.
     "Power backup for low-power controllers and processors is increasingly
 important in the mobile systems appearing today," said Giovanna Monari,
 strategic product marketing engineer for TI's supervisory circuits.  "TI's
 highly integrated TPS360x supervisors enable backup without system reset,
 permitting the continued, uninterrupted use of applications when the main
 source of battery power in a system fails."
 
     High Level of Integration
     The TPS360x/361x SVS devices lower component count and reduce board space
 by integrating several functions while requiring no external devices for
 implementation.  An integrated delay of 100 milliseconds (ms) when system
 power returns allows the supply voltage and internal oscillator to stabilize
 before power is returned from the backup to the main source.  During intervals
 of power instability, an integrated chip-enable gating function disconnects
 the RAM to prevent erroneous data writes.  To maintain system integrity, a
 watchdog timer monitors the processor and issues a reset after a period of no
 activity.
     The SVS devices also feature a "freshness seal" that shuts off power
 drainage when the system is stored before use, enabling retail products to
 stay fully charged on the shelf until the device is purchased.  To simplify
 development and speed time-to-market, an evaluation module (EVM) is available
 that demonstrates how the TPS360x SVS functions with TI's low-power MSP430
 microcontroller.  In addition, the devices include a manual switchover pin to
 aid in development and testing.
 
     Availability, Packaging and Pricing
     Samples of TPS360x/361x supervisors are available now from TI and its
 authorized distributors.  The following table provides the voltage options,
 packaging, suggested resale pricing and availability for both the devices.
 
 
       Device     Voltage         Package    Scheduled    Suggested Resale
                  options                   availability     Pricing
                                                         (ea. in 1,000 qty.)
      TPS3600    2, 3.3, 5 V    14-pin TSSOP    NOW           $2.35
      TPS3606    3.3 V          10-pin MSOP     NOW           $1.84
      TPS3610    1.8, 5 V       14-pin TSSOP    NOW           $2.15
      TPS3613    Adjustable     10-pin MSOP     NOW           $1.67
      TPS3617    5 V            8-pin MSOP      NOW           $1.25
      TPS3619    3.3, 5 V       8-pin MSOP    MAY '01         $1.15
 
 
     Texas Instruments Incorporated is the world leader in digital signal
 processing and analog technologies, the semiconductor engines of the Internet
 age.  The company's businesses also include sensors and controls, and
 educational and productivity solutions.  TI is headquartered in Dallas, Texas,
 and has manufacturing or sales operations in more than 25 countries.
     Texas Instruments is traded on the New York Stock Exchange under the
 symbol TXN.  More information is located on the World Wide Web at:
 http://www.ti.com.
 
      Please refer all reader inquiries to:  Texas Instruments Incorporated
                                             Semiconductor Group, SC-01085
                                             Literature Response Center
                                             P.O. Box 954
                                             Santa Clarita, CA  91380
                                             1-800-477-8924, ext. 4500
 
 SOURCE  Texas Instruments Incorporated Semiconductor Group

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