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STMicroelectronics STM6823ZWY6F
- Part No.:
- STM6823ZWY6F
- Manufacturer:
- STMicroelectronics
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
STM6823ZWY6F.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,573
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Product details
Overview
STM6823ZWY6F from STMicroelectronics is a 5-pin precision voltage supervisor IC with integrated watchdog timer and manual reset input, designed for microprocessor reset management in industrial embedded systems. It monitors VCC at 3.3 V (±2.5%), asserts active-low push-pull RST for ≥1.4 ms, features 1.6 s watchdog timeout, and guarantees reset assertion down to VCC = 1.0 V - used in programmable logic controllers and motor control modules.
For engineers reviewing the STM6823ZWY6F datasheet, STM6823ZWY6F pinout, STM6823ZWY6F application, or STM6823ZWY6F equivalent, this page delivers verified technical context, exact pin functions, real-world use cases, and validated alternative parts - all grounded in ST's production datasheet DocID11110 Rev 14.
Technical Context
The STM6823ZWY6F implements a precision bandgap reference and comparator to monitor VCC against a fixed 3.3 V threshold (±2.5% over –40 to +85 °C), with reset assertion guaranteed down to VCC = 1.0 V. Its internal watchdog timer triggers reset if WDI remains static for ≥1.6 s (typ.), and clears on any WDI edge (≥50 ns pulse width supported).
It provides an active-low push-pull RST output with trec = 1.4 ms (typ.) after power-up or MR release, and includes a manually controllable MR input with internal 52 kΩ pull-up - enabling direct switch-to-ground connection without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Threshold | 3.3 V ±2.5% - ensures reliable reset assertion for 3.3 V systems across industrial temperature range. |
| RST Pulse Width | 1.4 ms (typ.) - meets minimum reset hold time requirements of ARM Cortex-M and PIC microcontrollers. |
| Watchdog Timeout | 1.6 s (typ.) - provides sufficient margin to detect firmware lockup in real-time control loops. |
| Supply Current | 3 µA (typ.) at VCC < 3.6 V - enables battery-backed operation in low-power monitoring applications. |
| Operating Temp | –40 to +85 °C - qualified for industrial-grade deployment in factory automation and HVAC controllers. |
| Reset Validity | Guaranteed down to VCC = 1.0 V - maintains functional reset signaling during brownout and deep undervoltage conditions. |
| MR Input Pull-up | 52 kΩ internal - allows direct momentary switch connection; eliminates need for external resistor. |
Pinout & Package
STM6823ZWY6F is housed in a standard SOT23-5 package (JEDEC MO-178AB), measuring 2.9 × 1.6 × 1.1 mm, with gull-wing leads and RoHS-compliant matte tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - WDI | Watchdog input | Edge-sensitive input; toggling within 1.6 s prevents reset; floating or tristated disables watchdog. |
| 2 - VCC | Power supply | Accepts 1.0–5.5 V; powers internal reference, comparator, and logic; monitored for threshold violation. |
| 3 - RST | Active-low reset output | Push-pull driver; sinks/source current; asserts low for ≥1.4 ms after power-up, MR release, or watchdog timeout. |
| 4 - MR | Manual reset input | Active-low; internal 52 kΩ pull-up; asserts reset while low and for trec after rising edge. |
| 5 - VSS | Ground reference | Return path for all internal circuits; must be connected directly to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Precision 3.3 V monitoring | ±2.5% threshold accuracy over –40 to +85 °C - eliminates need for external trimming in 3.3 V rail supervision. |
| Integrated watchdog timer | 1.6 s timeout with edge-triggered clear - detects MCU hang without requiring dedicated timer peripheral. |
| Guaranteed reset below 1.0 V | Valid RST assertion down to VCC = 1.0 V - ensures fail-safe behavior during severe brownout events. |
| Low-quiescent-current design | 3 µA typical ICC - extends battery life in always-on supervisory roles (e.g., backup power monitoring). |
| MR with internal pull-up | 52 kΩ on-chip resistor - supports direct switch-to-ground interface; no external BOM component required. |
Applications
| Programmable Logic Controller (PLC) | Motor Drive Control Board |
|---|---|
Use Scenario: Supervises main 3.3 V logic rail powering FPGA configuration memory and communication peripherals. IC Role / Device Role / Timing Role: Voltage supervisor with watchdog - monitors VCC, resets FPGA on undervoltage or firmware freeze, and validates boot integrity. Use Value: Prevents corrupted configuration loading by enforcing minimum 1.4 ms reset pulse and asserting reset down to 1.0 V during AC line sag. |
Use Scenario: Monitors isolated 3.3 V supply feeding gate driver logic and current-sense ADC interface. IC Role / Device Role / Timing Role: System-level reset manager - asserts RST on VCC dropout, responds to emergency stop button via MR, and recovers from DSP lockup via WDI. Use Value: Enables safe shutdown and restart under fault conditions, with 1.6 s watchdog timeout aligned to motor thermal response time. |
| Industrial HMI Panel | Smart Sensor Node |
Use Scenario: Ensures clean boot of ARM-based display controller after cold start or power interruption. IC Role / Device Role / Timing Role: Power-on reset generator - provides precise 1.4 ms reset hold time synchronized to 3.3 V rail stabilization. Use Value: Eliminates boot failures caused by marginal VCC ramp rates; internal 52 kΩ MR pull-up simplifies front-panel button integration. |
Use Scenario: Supervises 3.3 V supply in battery-powered wireless sensor with ultra-low sleep current. IC Role / Device Role / Timing Role: Low-power system supervisor - draws only 3 µA during sleep, asserts reset on brownout, and supports wake-on-button via MR. Use Value: Extends shelf life and field runtime by minimizing quiescent current while maintaining full reset reliability down to 1.0 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor with watchdog applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM6822ZWY6F | Active-low open-drain RST output (requires external pull-up); identical VCC threshold, watchdog, and MR specs. | Suitable where reset line must interface with multiple voltage domains (e.g., 5 V MCU + 3.3 V logic). | Select when level-shifting or wired-OR reset bus architecture is required. |
| TPS3808G33DBVR | 3.3 V supervisor with 200 ms reset pulse (not 1.4 ms); no MR input; watchdog disabled by default; 1.6 µA ICC. | Used in simpler systems lacking manual reset or fast-reset timing requirements. | Choose only if 200 ms reset hold suffices and MR functionality is unnecessary. |
Compared with STM6823ZWY6F, STM6822ZWY6F offers open-drain flexibility at the cost of added BOM complexity, while TPS3808G33DBVR trades MR and fast reset for lower current - making STM6823ZWY6F optimal for industrial designs needing deterministic 1.4 ms reset and direct push-button support.
Availability
STM6823ZWY6F is available at Aetrix Electronics and suitable for programmable logic controllers, motor drive control boards, industrial HMI panels, and smart sensor nodes requiring stable component supply across extended product lifecycles.
Supply support for STM6823ZWY6F 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 silicon solutions for automotive, industrial, and embedded markets since 1987.
The STM6xxx series was developed specifically for robust, low-power microprocessor supervision in harsh industrial environments - emphasizing precision threshold stability, guaranteed low-VCC operation, and integrated watchdog safety.
FAQ
What is the exact reset threshold voltage for STM6823ZWY6F?
The STM6823ZWY6F has a nominal VCC reset threshold of 3.3 V with ±2.5% tolerance over –40 to +85 °C, as specified in Table 6 of ST's DocID11110 Rev 14. This value is factory-trimmed and does not require external calibration.
Can the watchdog function be disabled, and how?
Yes - the watchdog timer is disabled when the WDI pin is left unconnected or driven by a tristated output. In this state, internal leakage (<10 µA) and load capacitance (<200 pF) must remain within limits per Section 2.4 of the datasheet.
Does STM6823ZWY6F support manual reset with a simple push button?
Yes - the MR pin has an internal 52 kΩ pull-up resistor, allowing direct connection of a normally-open momentary switch between MR and GND. No external resistor or debounce circuitry is required for standard industrial use.
What is the maximum VCC voltage the device can tolerate?
STM6823ZWY6F supports VCC up to 5.5 V continuously, with absolute maximum rating of 7.0 V (per Table 4). Operation above 5.5 V is not guaranteed and may cause malfunction or damage.
STM6823ZWY6F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.3V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
STM6823ZWY6F FAQ
1.How can I place an order for STM6823ZWY6F through Aetrix?
Please submit a Request for Quotation (RFQ) for STM6823ZWY6F 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 STM6823ZWY6F reliable?
The price and inventory of STM6823ZWY6F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM6823ZWY6F is usually 5 days.
3.What payment methods are accepted for STM6823ZWY6F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM6823ZWY6F transactions.
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4.How is shipping managed for STM6823ZWY6F?
STM6823ZWY6F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM6823ZWY6F 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 STM6823ZWY6F?
For technical support, including STM6823ZWY6F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM6823ZWY6F requirements.
6.How does Aetrix verify that STM6823ZWY6F is sourced from the original manufacturer or authorized distributors?
All STM6823ZWY6F 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 STM6823ZWY6F meets industry standards.
7.What is the process for return or replacement of STM6823ZWY6F?
All STM6823ZWY6F units undergo pre-shipment inspection (PSI). If there is an issue with STM6823ZWY6F, 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 STM6823ZWY6F part is unused and in its original packaging.
Return procedure for STM6823ZWY6F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM6823ZWY6F Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
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