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  • The STM690/704/795/802/804/805/806 supervisors are self-contained devices which provide microprocessor supervisory functions with the ability to non-volatize and write-protect external LPSRAM. A precision voltage reference and comparator monitors the VCCinput for an out-of-tolerance condition. When an invalid VCCcondition occurs, the reset output (RST) is forced low (or high in the case of RST). These devices also offer a watchdog timer (except for STM704/795/806) as well as a power-fail comparator (except for STM795) to provide the system with an early warning of impending power failure.

    These devices are available in a standard 8-pin SOIC package or a space-saving 8-pin TSSOP package.

    Key Features

    • RST orRSToutputs
    • NVRAM supervisor for external LPSRAM
    • Chip enable gating (STM795 only) for external LPSRAM (7 ns max prop delay)
    • Manual (push-button) reset input
    • 200 ms (typ) trec
    • Watchdog timer - 1.6 s (typ)
    • Automatic battery switchover
    • Low battery supply current - 0.4 μA (typ)
    • Power-fail comparator (PFI/PFO)
    • Low supply current - 40 μA (typ)
    • GuaranteedRST(RST) assertion down to VCC= 1.0 V
    • Operating temperature: –40 °C to 85 °C (industrial grade)
    • RoHS compliance
      • Lead-free components are compliant with the RoHS directive

Circuit Diagram

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Technical Documentation

    • Description Version Size Action
      DS3898
      3 V supervisor with battery switchover
      9.1
      945.84 KB
      PDF
      DS3898

      3 V supervisor with battery switchover

    • Description Version Size Action
      AN1957
      Microprocessor supervisor functions
      2.0
      577.14 KB
      PDF
      AN1336
      Power-fail comparator for NVRAM supervisory devices
      2.0
      127.81 KB
      PDF
      AN1957

      Microprocessor supervisor functions

      AN1336

      Power-fail comparator for NVRAM supervisory devices

    • 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)

Publications and Collaterals

    • Description Version Size Action
      Resets and supervisors - portfolio overview 1.0
      1.31 MB
      PDF

      Resets and supervisors - portfolio overview

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STM690RM6F
Active
SO-8 Industrial Ecopack1
STM690SM6F
Active
SO-8 Industrial Ecopack1
STM690TM6F
Active
SO-8 Industrial Ecopack1

STM690RM6F

Package:

SO-8

Material Declaration**:

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack1

STM690SM6F

Package:

SO-8

Material Declaration**:

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack1

STM690TM6F

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack1

(**) 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
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Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) RST Threshold (V) (typ)
Budgetary Price (US$)*/Qty
More info
min
max
STM690RM6F Available at 3 distributors

Distributor availability ofSTM690RM6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 739 1 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 1755 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

DIGIKEY

Stock

739

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1755

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-08-02

Buy now
Active
EAR99 NEC Tape And Reel SO-8 - - 2.63 1.23 / 1k
MORE INFO

Unit Price (US$):

1.23

Country of Origin:

MOROCCO

STM690TM6F Available at 3 distributors

Distributor availability ofSTM690TM6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4455 1 Order Now
ARROW AMERICA 15490 1 Order Now
MOUSER WORLDWIDE 3652 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

DIGIKEY

Stock

4455

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

15490

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

3652

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-08-02

Buy now
Active
EAR99 NEC Tape And Reel SO-8 - - 3.08 1.23 / 1k
MORE INFO

Unit Price (US$):

1.23

Country of Origin:

MOROCCO

STM690SM6F Available at 3 distributors

Distributor availability ofSTM690SM6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1823 1 Order Now
Newark Element14 AMERICA 495 0 Order Now
Farnell Element14 EUROPE 1413 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

DIGIKEY

Stock

1823

Min.Order

1

Region

WORLDWIDE Order Now

Newark Element14

Stock

495

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

1413

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-02

Active
EAR99 NEC Tape And Reel SO-8 - - 2.93 1.23 / 1k
MORE INFO

Unit Price (US$):

1.23

Country of Origin:

MOROCCO

STM690RM6F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.23 / 1k

Distributor availability ofSTM690RM6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 739 1 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 1755 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

DIGIKEY

Stock

739

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1755

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-08-02

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-8

Operating Temperature (°C)

(min)

-

(max)

-

RST Threshold (V) (typ)

2.63

Budgetary Price (US$)* / Qty

1.23 / 1k

Country of Origin

MOROCCO

STM690TM6F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.23 / 1k

Distributor availability ofSTM690TM6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4455 1 Order Now
ARROW AMERICA 15490 1 Order Now
MOUSER WORLDWIDE 3652 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

DIGIKEY

Stock

4455

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

15490

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

3652

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-08-02

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-8

Operating Temperature (°C)

(min)

-

(max)

-

RST Threshold (V) (typ)

3.08

Budgetary Price (US$)* / Qty

1.23 / 1k

Country of Origin

MOROCCO

STM690SM6F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.23 / 1k

Distributor availability ofSTM690SM6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1823 1 Order Now
Newark Element14 AMERICA 495 0 Order Now
Farnell Element14 EUROPE 1413 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

DIGIKEY

Stock

1823

Min.Order

1

Region

WORLDWIDE Order Now

Newark Element14

Stock

495

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

1413

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-02

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-8

Operating Temperature (°C)

(min)

-

(max)

-

RST Threshold (V) (typ)

2.93

Budgetary Price (US$)* / Qty

1.23 / 1k

Country of Origin

MOROCCO

(*) 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