STM6519:Single push-button Smart Reset

The Smart ResetTM devices provide a useful feature which ensures that inadvertent short reset push-button closures do not cause system resets. This is done by implementing an extended Smart Reset input delay time (tSRC), which ensures a safe reset and eliminates the need for a specific dedicated reset button.

This reset configuration provides versatility and allows the application to distinguish between a software generated interrupt and a hard system reset. When the input push-button is connected to the microcontroller interrupt input, and is closed for a short time, the processor can only be interrupted. If the system still does not respond properly, continuing to keep the push-buttons closed for the extended setup time tSRCcauses a hard reset of the processor through the reset output.

The STM6519 has one Smart Reset input (SR) with preset delayed Smart Reset setup time (tSRC). The reset output (RST) is asserted after the Smart Reset input is held active for the selected tSRCdelay time. The RSToutput remains asserted either until the SRinput goes to inactive logic level (i.e. neither fixed nor minimum reset pulse width is set) or the output reset pulse duration is fixed for tREC (i.e. factory-programmed). The device fully operates over a broad VCCrange from 2.0 V to 5.5 V.

Key Features

  • Operating voltage range 2 V to 5.5 V
  • Low supply current 1 μA
  • Integrated test mode
  • Single Smart Reset™ push-button input with fixed extended reset setup delay (tSRC ) from 0.5 s to 10 s in 0.5 s steps (typ.), option with internal input pull-up resistor
  • Push-button controlled reset pulse duration
  • Option 1: fully push-button controlled, no fixed or minimum pulse width guaranteed
  • Option 2: defined output reset pulse duration (tREC ), factory-programmed
  • Single reset output
  • Active-low or active-high
  • Push-pull or open drain with optional pull-up resistor
  • Fixed Smart Reset input logic voltage levels
  • Operating temperature: -40 °C to 85 °C
  • UDFN6 package 1.00 mm x 1.45 mm
  • ECOPACK® 2 (RoHS compliant, Halogen-Free)
Product Specifications
DescriptionVersionSize
DS8614: Single-pin, push button Smart Reset™7.0543 KB
Technical Notes & Articles
DescriptionVersionSize
TN0941: Reset and supervisor ICs: frequently asked questions (FAQ)1.0328 KB
Presentations
DescriptionVersionSize
Health and Wellness Mobility Cloud computing1 MB
ST offering in Wearable - Analog and Mixed Signal Portfolio3.01 MB
Flyers
DescriptionVersionSize
Resets and supervisors - portfolio overview1.01 MB
Smart Reset ICs dual push-button1.0767 KB
Brochures
DescriptionVersionSize
ST’s solutions for mobile devices3.23 MB
Sample & Buy
Part NumberPackagePacking TypeReset pulse width (mS) (min)Reset pulse width (mS) (max)Operating Temperature (°C) (min)Unit Price (US$) *QuantityOperating Temperature (°C) (max)ECCN (EU)ECCN (US)Country of Origin
STM6519APARUB6FUFDFPN 1X1.45X0.6 6L PITCH0.5Tape And Reel1.28360-400.3100085NECEAR99PHILIPPINES
STM6519AHARUB6FUFDFPN 1X1.45X0.6 6L PITCH0.5Tape And Reel1.28360-400.3100085NECEAR99PHILIPPINES
STM6519APAAUB6FUFDFPN 1X1.45X0.6 6L PITCH0.5Tape And Reel1.28360-400.3100085NECEAR99PHILIPPINES
STM6519ALARUB6FUFDFPN 1X1.45X0.6 6L PITCH0.5Tape And Reel1.28360-400.3100085NECEAR99PHILIPPINES
STM6519APBBUB6FUFDFPN 1X1.45X0.6 6L PITCH0.5Tape And Reel1.28360-400.3100085NECEAR99PHILIPPINES
STM6519AUARUB6FUFDFPN 1X1.45X0.6 6L PITCH0.5Tape And Reel1.28360-400.3100085NECEAR99PHILIPPINES
STM6519ACARUB6FUFDFPN 1X1.45X0.6 6L PITCH0.5Tape And Reel1.28360-400.3100085NECEAR99PHILIPPINES
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
STM6519APARUB6FUFDFPN 1X1.45X0.6 6L PITCH0.5IndustrialEcopack3
STM6519AHARUB6FUFDFPN 1X1.45X0.6 6L PITCH0.5IndustrialEcopack3md_a0tt-wspc-ufdfpn-wspc-1x1.45x0.6-wspc-6l-wspc-p0.5_bce1w6baarh-wspc-(stm6519aharub6f)-wspc-wcp-wspc-ver2_signed.pdf
md_a0tt-wspc-ufdfpn-wspc-1x1.45x0.6-wspc-6l-wspc-p0.5_bce1w6baarh-wspc-(stm6519aharub6f)-wspc-wcp-wspc-ver2.xml
STM6519APAAUB6FUFDFPN 1X1.45X0.6 6L PITCH0.5IndustrialEcopack3md_a0tt-wspc-ufdfpn-wspc-1x1.45x0.6-wspc-6l-wspc-p0.5_bce1w6baaap-wspc-(stm6519apaaub6f)-wspc-wcp-wspc-ver2_signed.pdf
md_a0tt-wspc-ufdfpn-wspc-1x1.45x0.6-wspc-6l-wspc-p0.5_bce1w6baaap-wspc-(stm6519apaaub6f)-wspc-wcp-wspc-ver2.xml
STM6519ALARUB6FUFDFPN 1X1.45X0.6 6L PITCH0.5IndustrialEcopack3
STM6519APBBUB6FUFDFPN 1X1.45X0.6 6L PITCH0.5IndustrialEcopack3
STM6519AUARUB6FUFDFPN 1X1.45X0.6 6L PITCH0.5IndustrialEcopack3md_a0tt-wspc-ufdfpn-wspc-1x1.45x0.6-wspc-6l-wspc-p0.5_ace1-wspc-w6baaru_vers2_signed.pdf
md_a0tt-wspc-ufdfpn-wspc-1x1.45x0.6-wspc-6l-wspc-p0.5_ace1-wspc-w6baaru.xml
STM6519ACARUB6FUFDFPN 1X1.45X0.6 6L PITCH0.5IndustrialEcopack3
Single-pin, push button Smart Reset™ STM6519
Reset and supervisor ICs: frequently asked questions (FAQ) STM805T-S-R
Tutorial for MEMS microphones MP23AB02B
Filter-free stereo 2.8 W class D audio power amplifier with selectable 3D sound effects TS4999
Reset and supervisor ICs: frequently asked questions (FAQ) STM805T-S-R
Reset and supervisor ICs: frequently asked questions (FAQ) STM6522
1.2 megapixel high dynamic range image sensor VD8640
md_a0tt-wspc-ufdfpn-wspc-1x1.45x0.6-wspc-6l-wspc-p0.5_bce1w6baarh-wspc-(stm6519aharub6f)-wspc-wcp-wspc-ver2_signed.pdf STM6519
md_a0tt-wspc-ufdfpn-wspc-1x1.45x0.6-wspc-6l-wspc-p0.5_bce1w6baarh-wspc-(stm6519aharub6f)-wspc-wcp-wspc-ver2.xml STM6519
md_a0tt-wspc-ufdfpn-wspc-1x1.45x0.6-wspc-6l-wspc-p0.5_bce1w6baaap-wspc-(stm6519apaaub6f)-wspc-wcp-wspc-ver2_signed.pdf STM6519
md_a0tt-wspc-ufdfpn-wspc-1x1.45x0.6-wspc-6l-wspc-p0.5_bce1w6baaap-wspc-(stm6519apaaub6f)-wspc-wcp-wspc-ver2.xml STM6519
md_a0tt-wspc-ufdfpn-wspc-1x1.45x0.6-wspc-6l-wspc-p0.5_ace1-wspc-w6baaru_vers2_signed.pdf STM6519
md_a0tt-wspc-ufdfpn-wspc-1x1.45x0.6-wspc-6l-wspc-p0.5_ace1-wspc-w6baaru.xml STM6519