STM819L/M

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5 V supervisor with battery switchover

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Product overview

Description

The STM690A/692A/703/704/802/805/817/818/819 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 STM703/704/819) as well as a power-fail comparator (except for STM818) 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.

  • All features

    • 5 V operating voltage
    • NVRAM supervisor for external LPSRAM
    • Chip-enable gating (STM818 only) for external LPSRAM (7 ns max prop delay)
    • RST andRSToutputs
    • 200 ms (typ) trec
    • Watchdog timer - 1.6 sec (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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STMicroelectronics - STM819L/M

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STM819LM6F
Active
SO-8 Industrial Ecopack3
STM819MM6F
Active
SO-8 Industrial Ecopack3

STM819LM6F

Package:

SO-8

Material Declaration**:

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM819MM6F

Package:

SO-8

Material Declaration**:

Marketing Status

Active

Package

SO-8

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

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Part Number
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Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) RST Threshold (V) (typ)
Budgetary Price (US$)*/Qty
Unit Price (US$)
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min
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STM819MM6F Available at distributors

Distributor availability of STM819MM6F

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape and Reel SO-8 - - 4.4

0.9788

MOROCCO

STM819LM6F Available at distributors

Distributor availability of STM819LM6F

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape and Reel SO-8 - - 4.65

0.9788

MOROCCO

STM819MM6F Active

Package:
SO-8
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

STM819MM6F

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-

Max:

-

RST Threshold (V) (typ):

4.4

Country of Origin:

MOROCCO

STM819LM6F Active

Package:
SO-8
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

STM819LM6F

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-

Max:

-

RST Threshold (V) (typ):

4.65

Country of Origin:

MOROCCO

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