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STMicroelectronics STM810SWX6F
- Part No.:
- STM810SWX6F
- Manufacturer:
- STMicroelectronics
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
STM810SWX6F.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,447
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Product details
Overview
STM810SWX6F from STMicroelectronics is an industrial-grade active-high push-pull reset supervisor IC for 2.85 V to 3.00 V supply monitoring. It asserts a valid RST output down to VCC = 1.0 V, delivers a minimum 140 ms reset pulse width, draws only 6 µA typical supply current, and operates across –40 °C to +85 °C. It is used in microcontroller-based embedded systems requiring reliable power-on and brownout reset signaling.
For engineers reviewing the STM810SWX6F datasheet, STM810SWX6F pinout, STM810SWX6F application, or STM810SWX6F equivalent, key selection criteria include reset threshold accuracy (±2.5% over temperature), guaranteed RST validity at low VCC, SOT23-3 package compatibility, and absence of manual reset input - distinguishing it from STM811/812 variants.
Technical Context
The STM810SWX6F implements a precision voltage comparator with hysteresis to monitor VCC against a factory-trimmed 2.93 V nominal reset threshold (S-grade). Its internal timer ensures RST remains asserted for ≥140 ms after VCC rises above VRST, preventing premature MCU release during unstable power-up sequences.
No manual reset (MR) input is present - unlike STM811/812 - making it a dedicated power-supply monitor with minimal external components. The push-pull RST output actively drives high and low without requiring external pull-up resistors, simplifying interface with 3.3 V and 5 V logic families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93 V (nominal), 2.85–3.00 V range over –40 to +85 °C - ensures robust detection of 3.3 V supply brownout before MCU malfunction. |
| Reset Pulse Width (trec) | 140–280 ms - guarantees sufficient hold time for full MCU initialization and peripheral stabilization. |
| Supply Current (ICC) | 6 µA (typ) at VCC < 3.6 V - enables use in battery-backed or ultra-low-power systems without measurable drain. |
| VCC Operating Range | 1.0–5.5 V - supports operation during deep brownout and compatibility with 1.8 V–5 V logic domains. |
| RST Output Type | Active-high push-pull - eliminates need for external pull-up resistor and ensures fast, rail-to-rail logic transitions. |
| Temperature Range | –40 °C to +85 °C - qualified for industrial environments including factory automation and motor control systems. |
Pinout & Package
SOT23-3 (WX) package: 3-pin surface-mount, 2.8 mm × 2.1 mm footprint, 0.95 mm height, lead-free ECOPACK® compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VCC | Power supply input | Monitored voltage rail; device functions only when VCC ≥ 1.0 V. |
| 2: GND | Ground reference | Return path for internal comparator and output stage; must be low-impedance. |
| 3: RST | Active-high reset output | Push-pull driver; sinks ≥1.2 mA and sources ≥500 µA - directly interfaces with MCU reset pin. |
Key Features
| Feature | Design Value |
|---|---|
| Precision reset threshold | 2.93 V ±2.5% over temperature - eliminates need for external trimming in 3.3 V systems. |
| Low-power operation | 6 µA typical ICC - extends battery life in portable instrumentation and sensor nodes. |
| Brownout immunity | RST remains valid down to VCC = 1.0 V - prevents spurious release during slow power-down. |
| Fast transient rejection | Immune to ≤20 µs, 100 mV VCC glitches - reduces false resets in electrically noisy motor drive environments. |
| Lead-free packaging | SOT23-3 WX variant - meets RoHS and REACH requirements for global industrial manufacturing. |
Applications
| Industrial PLC I/O Module | Smart Energy Meter |
|---|---|
Use Scenario: Power sequencing in DIN-rail mounted programmable logic controller modules with isolated 3.3 V logic rails. IC Role / Device Role / Timing Role: Primary brownout detector ensuring MCU reset assertion during AC line sags or DC bus droop. Use Value: Prevents firmware corruption by guaranteeing ≥140 ms reset hold time even as VCC falls to 1.0 V. | Use Scenario: Battery-backed real-time clock and metrology subsystem in Class 0.5S electricity meters. IC Role / Device Role / Timing Role: Supervisory guard for MSP430 or ARM Cortex-M0+ MCU during main supply interruption. Use Value: 6 µA quiescent current minimizes battery depletion during 10-year meter lifetime. |
| Motor Drive Control Board | IoT Edge Gateway |
Use Scenario: Reset coordination between gate driver ICs and main controller in 24 V DC-fed servo drives. IC Role / Device Role / Timing Role: Single-point VCC monitor for 3.3 V FPGA configuration supply under EMI-rich switching conditions. Use Value: Immunity to 20 µs/100 mV transients avoids false resets during IGBT commutation noise bursts. | Use Scenario: Power management in cellular-connected edge devices deployed in remote infrastructure. IC Role / Device Role / Timing Role: System-level reset enforcer for dual-core application processor and wireless SoC during cold start. Use Value: Push-pull RST output drives reset pins directly without external components - reducing BOM count and PCB area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar reset supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3-T | 2.93 V threshold, same SOT23-3 package, but 140 ms trec is not guaranteed over full temperature range. | Lacks industrial –40 °C to +85 °C qualification; rated only to +70 °C ambient. | Select only for commercial-temperature applications where extended temp range is unnecessary. |
| TPS3808G12QDBVRQ1 | 2.93 V threshold, AEC-Q100 automotive grade, but 3x higher ICC (18 µA typ) and larger SOT23-6 package. | Designed for automotive infotainment; includes watchdog timer absent in STM810SWX6F. | Choose only if AEC-Q100 compliance or watchdog functionality is required - otherwise over-specified. |
Compared with MAX809TRD3-T and TPS3808G12QDBVRQ1, the STM810SWX6F uniquely combines industrial temperature rating, ultra-low ICC, and compact SOT23-3 footprint without added features that increase cost or complexity.
Availability
STM810SWX6F is available at Aetrix Electronics and suitable for industrial PLCs, smart energy meters, motor drive control boards, and IoT edge gateways requiring stable component supply across long production lifecycles.
Supply support for STM810SWX6F includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, delivering intelligent power, analog, MEMS, and microcontroller solutions since 1987.
The STM8xx series was designed specifically for cost-sensitive, space-constrained embedded systems requiring high-accuracy, low-power reset supervision - targeting industrial, metering, and consumer electronics markets.
FAQ
What is the exact reset threshold voltage for STM810SWX6F?
The STM810SWX6F has a nominal reset threshold of 2.93 V, with a guaranteed range of 2.85 V to 3.00 V across –40 °C to +85 °C. This corresponds to the "S" grade in ST's ordering scheme and is factory-trimmed for precision without external calibration.
Does STM810SWX6F support manual reset via a push-button input?
No. STM810SWX6F lacks a manual reset (MR) input pin. It is a dedicated power-supply monitor with automatic reset assertion only. For manual reset capability, ST offers the pin-compatible STM812SW16F in SOT143-4 package, which adds MR functionality.
Can STM810SWX6F drive a reset pin directly without external components?
Yes. Its push-pull RST output actively sources up to 500 µA and sinks up to 1.2 mA, enabling direct connection to standard MCU reset inputs (e.g., STM32, PIC, MSP430) without pull-up resistors or level shifters - verified per Table 5 DC characteristics.
Is STM810SWX6F qualified for automotive applications?
No. STM810SWX6F is specified for industrial temperature range (–40 °C to +85 °C) and is not AEC-Q100 qualified. For automotive use, ST recommends the TPS3808G12QDBVRQ1 or MAX6326UT29D3+T, both certified to AEC-Q100 Grade 2 or better.
STM810SWX6F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
STM810SWX6F FAQ
1.How can I place an order for STM810SWX6F through Aetrix?
Please submit a Request for Quotation (RFQ) for STM810SWX6F on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM810SWX6F reliable?
The price and inventory of STM810SWX6F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM810SWX6F is usually 5 days.
3.What payment methods are accepted for STM810SWX6F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM810SWX6F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM810SWX6F?
STM810SWX6F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM810SWX6F order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM810SWX6F?
For technical support, including STM810SWX6F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM810SWX6F requirements.
6.How does Aetrix verify that STM810SWX6F is sourced from the original manufacturer or authorized distributors?
All STM810SWX6F products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM810SWX6F meets industry standards.
7.What is the process for return or replacement of STM810SWX6F?
All STM810SWX6F units undergo pre-shipment inspection (PSI). If there is an issue with STM810SWX6F, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM810SWX6F part is unused and in its original packaging.
Return procedure for STM810SWX6F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM810SWX6F Tags
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MIC826SYMT-TR
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