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  • The Smart Reset™ devices provide a useful feature that ensures inadvertent short reset push-button closures do not cause system resets. This is done by implementing extended Smart Reset™ input delay time (tSRC) and combined push-button inputs, which together 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-buttons are connected to microcontroller interrupt inputs, and are 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 STM6524 has two combined delayed Smart Reset™ inputs (SR0,SR1) with preset delayed Smart Reset™ setup time (tSRC). The reset output is asserted after both of the Smart Reset™ inputs were held active for the selected tSRCdelay time. Depending on selected option theRSToutput remains asserted either until at least oneSRinput 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 reset output,RST, is active low or active high, push-pull or open drain with optional pull-up resistor. The device fully operates over a broad VCCrange 1.65 V to 5.5 V. Below 1.575 V typ. the inputs are ignored and outputs are deasserted; the deasserted reset output levels are then valid down to 1.0 V.

    Key Features

    • Operating voltage 1.65 V to 5.5 V
    • Low supply current 1.5 μA
    • Integrated test mode
    • Dual Smart Reset™ push-button inputs with fixed extended reset setup delay (tSRC) from 0.5 s to 10 s in 0.5 s steps (typ.), option with internal 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
    • No power-on reset
    • 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: 1.6 mm x 1.3 mm
    • ECOPACK®2 (RoHS compliant, Halogen-Free)

Recommended for you

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS8698
      6-pin Smart Reset™
      3.0
      268.2 KB
      PDF
      DS8698

      6-pin Smart Reset™

    • Description Version Size Action
      TN0941
      Reset and supervisor ICs: frequently asked questions (FAQ)
      1.0
      328.63 KB
      PDF
      TN0941

      Reset and supervisor ICs: frequently asked questions (FAQ)

Presentations & Training Material

    • Description Version Size Action
      Health and Wellness Mobility Cloud computing
      1.32 MB
      PDF
      ST offering in Wearable - Analog and Mixed Signal Portfolio 3.0
      1.47 MB
      PDF

      Health and Wellness Mobility Cloud computing

      ST offering in Wearable - Analog and Mixed Signal Portfolio

Publications and Collaterals

    • Description Version Size Action
      Resets and supervisors - portfolio overview 1.0
      1.31 MB
      PDF
      Smart Reset ICs dual push-button 1.0
      767.58 KB
      PDF

      Resets and supervisors - portfolio overview

      Smart Reset ICs dual push-button

    • Description Version Size Action
      ST’s solutions for mobile devices 3.2
      2.13 MB
      PDF

      ST’s solutions for mobile devices

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STM6524AHARDL6F
Active
UDFN-6L 1.3X1.6 X0.55,PITCH 0.40 Industrial Ecopack3
STM6524ALABDL6F
Active
UDFN-6L 1.3X1.6 X0.55,PITCH 0.40 Industrial Ecopack3
STM6524ALARDL6F
Active
UDFN-6L 1.3X1.6 X0.55,PITCH 0.40 Industrial Ecopack3
STM6524APARDL6F
Active
UDFN-6L 1.3X1.6 X0.55,PITCH 0.40 Industrial Ecopack3
STM6524AUABDL6F
Active
UDFN-6L 1.3X1.6 X0.55,PITCH 0.40 Industrial Ecopack3
STM6524AUARDL6F
Active
UDFN-6L 1.3X1.6 X0.55,PITCH 0.40 Industrial Ecopack3

STM6524AHARDL6F

Package:

UDFN-6L 1.3X1.6 X0.55,PITCH 0.40

Material Declaration**:

Marketing Status

Active

Package

UDFN-6L 1.3X1.6 X0.55,PITCH 0.40

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM6524ALABDL6F

Package:

UDFN-6L 1.3X1.6 X0.55,PITCH 0.40

Material Declaration**:

Marketing Status

Active

Package

UDFN-6L 1.3X1.6 X0.55,PITCH 0.40

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM6524ALARDL6F

Package:

UDFN-6L 1.3X1.6 X0.55,PITCH 0.40

Material Declaration**:

Marketing Status

Active

Package

UDFN-6L 1.3X1.6 X0.55,PITCH 0.40

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM6524APARDL6F

Package:

UDFN-6L 1.3X1.6 X0.55,PITCH 0.40

Material Declaration**:

Marketing Status

Active

Package

UDFN-6L 1.3X1.6 X0.55,PITCH 0.40

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM6524AUABDL6F

Package:

UDFN-6L 1.3X1.6 X0.55,PITCH 0.40

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UDFN-6L 1.3X1.6 X0.55,PITCH 0.40

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM6524AUARDL6F

Package:

UDFN-6L 1.3X1.6 X0.55,PITCH 0.40

Material Declaration**:

Marketing Status

Active

Package

UDFN-6L 1.3X1.6 X0.55,PITCH 0.40

Grade

Industrial

RoHS Compliance Grade

Ecopack3

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Package
Packing Type
Reset pulse width (mS) (min)
Reset pulse width (mS) (max)
Temperature (°C) Marketing Status
Budgetary Price (US$)*/Qty
More info
min
max
STM6524AHARDL6F Available at 2 distributors

Distributor availability ofSTM6524AHARDL6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 8234 1 Order Now
MOUSER WORLDWIDE 147 1 Order Now

Distributor reported inventory date: 2020-06-29

Distributor Name

DIGIKEY

Stock

8234

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

147

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-06-29

Buy now UDFN-6L 1.3X1.6 X0.55,PITCH 0.40 Tape And Reel 1.28 360 -40
Active
85 0.3 / 1k
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

STM6524AUARDL6F Available at 2 distributors

Distributor availability ofSTM6524AUARDL6F

Distributor Name
Region Stock Min. Order Third party link
ARROW AMERICA 27000 3000 Order Now
MOUSER WORLDWIDE 5831 1 Order Now

Distributor reported inventory date: 2020-06-29

Distributor Name

ARROW

Stock

27000

Min.Order

3000

Region

AMERICA Order Now

MOUSER

Stock

5831

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-06-29

Buy now UDFN-6L 1.3X1.6 X0.55,PITCH 0.40 Tape And Reel 1.28 360 -40
Active
85 0.3 / 1k
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

STM6524ALARDL6F No availability of distributors reported, please contact our sales office UDFN-6L 1.3X1.6 X0.55,PITCH 0.40 Tape And Reel 1.28 360 -40
Active
85 0.3 / 1k
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

STM6524AUABDL6F Available at 5 distributors

Distributor availability ofSTM6524AUABDL6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2791 1 Order Now
COMPEL EUROPE 6 1 Order Now
Newark Element14 AMERICA 700 0 Order Now
MOUSER WORLDWIDE 3789 1 Order Now
RUTRONIK EUROPE 3000 3000 Order Now

Distributor reported inventory date: 2020-06-29

Distributor Name

DIGIKEY

Stock

2791

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

6

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

700

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

3789

Min.Order

1

Region

WORLDWIDE Order Now

RUTRONIK

Stock

3000

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2020-06-29

Buy now UDFN-6L 1.3X1.6 X0.55,PITCH 0.40 Tape And Reel 240 480 -40
Active
85 0.3 / 1k
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

STM6524ALABDL6F No availability of distributors reported, please contact our sales office UDFN-6L 1.3X1.6 X0.55,PITCH 0.40 Tape And Reel 240 480 -40
Active
85 0.3 / 1k
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

STM6524APARDL6F Available at 2 distributors

Distributor availability ofSTM6524APARDL6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 495 1 Order Now
P&S ASIA/PACIFIC 1800 1 Order Now

Distributor reported inventory date: 2020-06-29

Distributor Name

DIGIKEY

Stock

495

Min.Order

1

Region

WORLDWIDE Order Now

P&S

Stock

1800

Min.Order

1

Region

ASIA/PACIFIC Order Now

Distributor reported inventory date: 2020-06-29

UDFN-6L 1.3X1.6 X0.55,PITCH 0.40 Tape And Reel 1.28 360 -40
Active
85 0.3 / 1k
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

STM6524AHARDL6F

Package

UDFN-6L 1.3X1.6 X0.55,PITCH 0.40

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.3 / 1k

Distributor availability ofSTM6524AHARDL6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 8234 1 Order Now
MOUSER WORLDWIDE 147 1 Order Now

Distributor reported inventory date: 2020-06-29

Distributor Name

DIGIKEY

Stock

8234

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

147

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-06-29

Reset pulse width (mS) (min)

1.28

Reset pulse width (mS) (max)

360

Operating Temperature (°C)

(min)

-40

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.3 / 1k

(max)

85

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STM6524AUARDL6F

Package

UDFN-6L 1.3X1.6 X0.55,PITCH 0.40

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.3 / 1k

Distributor availability ofSTM6524AUARDL6F

Distributor Name
Region Stock Min. Order Third party link
ARROW AMERICA 27000 3000 Order Now
MOUSER WORLDWIDE 5831 1 Order Now

Distributor reported inventory date: 2020-06-29

Distributor Name

ARROW

Stock

27000

Min.Order

3000

Region

AMERICA Order Now

MOUSER

Stock

5831

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-06-29

Reset pulse width (mS) (min)

1.28

Reset pulse width (mS) (max)

360

Operating Temperature (°C)

(min)

-40

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.3 / 1k

(max)

85

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STM6524ALARDL6F

Package

UDFN-6L 1.3X1.6 X0.55,PITCH 0.40

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.3 / 1k

Reset pulse width (mS) (min)

1.28

Reset pulse width (mS) (max)

360

Operating Temperature (°C)

(min)

-40

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.3 / 1k

(max)

85

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STM6524AUABDL6F

Package

UDFN-6L 1.3X1.6 X0.55,PITCH 0.40

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.3 / 1k

Distributor availability ofSTM6524AUABDL6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2791 1 Order Now
COMPEL EUROPE 6 1 Order Now
Newark Element14 AMERICA 700 0 Order Now
MOUSER WORLDWIDE 3789 1 Order Now
RUTRONIK EUROPE 3000 3000 Order Now

Distributor reported inventory date: 2020-06-29

Distributor Name

DIGIKEY

Stock

2791

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

6

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

700

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

3789

Min.Order

1

Region

WORLDWIDE Order Now

RUTRONIK

Stock

3000

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2020-06-29

Reset pulse width (mS) (min)

240

Reset pulse width (mS) (max)

480

Operating Temperature (°C)

(min)

-40

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.3 / 1k

(max)

85

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STM6524ALABDL6F

Package

UDFN-6L 1.3X1.6 X0.55,PITCH 0.40

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.3 / 1k

Reset pulse width (mS) (min)

240

Reset pulse width (mS) (max)

480

Operating Temperature (°C)

(min)

-40

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.3 / 1k

(max)

85

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STM6524APARDL6F

Package

UDFN-6L 1.3X1.6 X0.55,PITCH 0.40

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.3 / 1k

Distributor availability ofSTM6524APARDL6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 495 1 Order Now
P&S ASIA/PACIFIC 1800 1 Order Now

Distributor reported inventory date: 2020-06-29

Distributor Name

DIGIKEY

Stock

495

Min.Order

1

Region

WORLDWIDE Order Now

P&S

Stock

1800

Min.Order

1

Region

ASIA/PACIFIC Order Now

Distributor reported inventory date: 2020-06-29

Reset pulse width (mS) (min)

1.28

Reset pulse width (mS) (max)

360

Operating Temperature (°C)

(min)

-40

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.3 / 1k

(max)

85

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors