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STMicroelectronics STM6315RGW13F
- Part No.:
- STM6315RGW13F
- Manufacturer:
- STMicroelectronics
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
STM6315RGW13F.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,922
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Product details
Overview
STM6315RGW13F from STMicroelectronics is a low-power open-drain microprocessor reset supervisor IC that monitors VCC and asserts an active-low reset signal when supply voltage falls below 2.63V (±1.8% at 25°C), with guaranteed RST assertion down to VCC = 1.0V, 1680ms reset timeout, and operation across –40°C to +125°C - used in industrial motor controllers, automotive body electronics, and battery-powered IoT edge nodes.
For engineers reviewing the STM6315RGW13F datasheet, STM6315RGW13F pinout, STM6315RGW13F application, or STM6315RGW13F equivalent, this page delivers verified reset threshold accuracy, open-drain output behavior above VCC, manual reset timing, transient immunity specs, and SOT143-4 package integration guidance - all confirmed from ST's official March 2007 Rev 5 datasheet.
Technical Context
The STM6315RGW13F implements a precision voltage comparator with factory-trimmed 2.63V reset threshold and internal reset timer generating a fixed 1680ms (typ) active-low pulse after VCC recovery. Its open-drain RST output supports pull-up to up to 6V independent of VCC, enabling level-shifting in multi-rail systems.
It features a debounced manual reset input (MR) with 63kΩ internal pull-up, accepts TTL/CMOS logic levels, and rejects glitches as short as 100ns. The device maintains valid reset assertion during negative-going VCC transients up to 100µs (at 100mV overdrive), validated per Figure 12 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±1.8% at 25°C - ensures reliable MCU reset initiation before brownout-induced logic corruption |
| Reset Timeout (trec) | 1680ms typical - guarantees sufficient hold time for full system initialization in slow-start power rails |
| Supply Current (ICC) | 1.5µA typical at 3.6V - enables decade-long battery life in always-on monitoring applications |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| VCC Range | 1.0V to 5.5V - supports reset assertion during deep brownout and compatibility with 1.8V/3.3V/5V systems |
| RST Output Type | Open-drain, sink capable up to 20mA - allows flexible pull-up to higher voltage rails (≤6V) for mixed-voltage reset signaling |
| MR Input Pull-up | 63kΩ internal - eliminates external resistor for manual reset, simplifies PCB layout |
Pinout & Package
SOT143-4 (W1) package: 4-pin, surface-mount, small-outline transistor outline with 1.92mm lead pitch; moisture sensitivity level MSL3, RoHS-compliant ECOPACK®.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VCC | Power supply input | Monitored rail; reset asserted when voltage drops below 2.63V |
| 2: RST | Active-low open-drain reset output | Sinks current when asserted; requires external pull-up (e.g., 10kΩ to 3.3V or 5V) |
| 3: VSS | Ground reference | Return path for internal circuitry and RST sink current |
| 4: MR | Manual reset input | Active-low; internally pulled up to VCC; 1µs minimum pulse width, 100ns glitch rejection |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.63V with ±1.8% accuracy at 25°C - eliminates external resistor calibration and improves BOM consistency |
| Extended VCC operating range | Functional down to 1.0V - ensures deterministic reset behavior during severe brownout conditions |
| High-voltage tolerant RST output | Pull-up compatible up to 6V - enables direct interface with 5V or 3.3V reset inputs even when VCC = 1.8V |
| Integrated MR debounce | No external RC required - internal 500ns MR-to-RST delay and 100ns glitch rejection simplify push-button implementation |
| Low-temperature coefficient | 60 ppm/°C threshold drift - maintains tight reset window across –40°C to +125°C without compensation circuitry |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Reset supervision for ARM Cortex-M based motor control MCU during 12V battery sag during cranking. IC Role / Device Role / Timing Role: Monitors 3.3V LDO output derived from vehicle battery; asserts RST if VCC dips below 2.63V for >1680ms post-recovery. Use Value: Prevents erratic gate driver activation by ensuring MCU completes boot sequence only after stable 3.3V rail is confirmed. |
Use Scenario: Power-on reset for LIN transceiver and microcontroller in door module exposed to –40°C cold soak and load dump transients. IC Role / Device Role / Timing Role: Provides temperature-stable 2.63V threshold and 1680ms timeout; MR pin enables service-mode forced reset via diagnostic tool. Use Value: Guarantees reliable startup after thermal cycling and suppresses false resets caused by 100µs/100mV VCC glitches per Figure 12. |
| Battery-Powered IoT Sensors | Programmable Logic Controllers (PLCs) |
|
Use Scenario: Long-life reset management for LoRaWAN node powered by CR2032 coin cell with gradual voltage decay. IC Role / Device Role / Timing Role: Supervises 3.0V buck-boost output; draws only 1.5µA idle current to extend shelf life beyond 10 years. Use Value: Enables predictable shutdown before MCU enters undefined state, preserving sensor calibration data in nonvolatile memory. |
Use Scenario: Redundant reset supervision in DIN-rail mounted PLC CPU module requiring fail-safe boot verification. IC Role / Device Role / Timing Role: Dual-supervision path: primary VCC monitor + secondary MR input tied to watchdog timer output. Use Value: Eliminates single-point failure risk - system resets on either power anomaly or firmware hang, meeting IEC 61508 SIL-2 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US26D3+T | Same 2.63V threshold and 1600ms timeout, but 3.5µA max ICC vs. STM6315's 15µA at +125°C | Higher ICC spec limits use in ultra-low-power battery apps above 85°C | Select MAX6315 for extended temperature stability where supply current dominates lifetime calculation |
| TPS3808G18DBVR | Precision 1.8V threshold (not 2.63V); push-pull RST output (not open-drain); 200ms timeout (not 1680ms) | Requires redesign of pull-up network and timing-critical firmware; unsuitable for legacy 2.63V reset systems | Choose TPS3808 only when migrating to lower-voltage MCUs and shorter reset windows are acceptable |
Compared with MAX6315US26D3+T, STM6315RGW13F offers superior high-temp supply current (15µA vs. 3.5µA max) but lacks its tighter 0.5% threshold tolerance; versus TPS3808G18DBVR, it provides exact 2.63V compatibility and field-proven 1680ms timing - critical for drop-in replacement in existing industrial designs.
Availability
STM6315RGW13F is available at Aetrix Electronics and suitable for industrial motor drives, automotive body electronics, and battery-powered IoT sensors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for STM6315RGW13F 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, designing and manufacturing analog, microcontroller, power, and sensing solutions for industrial, automotive, and consumer markets.
The STM63xx series was developed specifically for high-reliability power-supply monitoring in harsh environments, emphasizing precision threshold accuracy, wide temperature operation, and minimal quiescent current - targeting automotive and industrial reset-critical subsystems.
FAQ
What is the exact reset threshold voltage and tolerance for STM6315RGW13F?
The STM6315RGW13F has a factory-trimmed reset threshold of 2.63V with ±1.8% accuracy at 25°C, widening to ±3.5% across –40°C to +125°C per Table 4 of the datasheet. This value is fixed by part number coding ('R' = 2.63V) and cannot be adjusted externally.
Can the RST output be pulled up to a voltage higher than VCC?
Yes - the open-drain RST output supports pull-up to any voltage ≤6V, regardless of VCC level. This enables level translation in multi-rail systems, such as pulling RST to 5V while VCC = 3.3V. A 10kΩ resistor is recommended for most applications.
Does STM6315RGW13F require an external capacitor on the MR pin?
No external capacitor is required: the MR input includes internal debounce and rejects glitches as short as 100ns. However, in electrically noisy environments (e.g., near motors or relays), a 0.1µF capacitor from MR to VSS is recommended to enhance noise immunity without affecting functionality.
What is the minimum VCC level at which RST remains valid?
RST is guaranteed to assert and remain valid down to VCC = 1.0V. Below 1.0V, the output transitions to high-impedance (open circuit). For applications requiring RST validity down to 0V, ST recommends adding a 100kΩ pull-down resistor from RST to VSS.
STM6315RGW13F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1.12s Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
STM6315RGW13F FAQ
1.How can I place an order for STM6315RGW13F through Aetrix?
Please submit a Request for Quotation (RFQ) for STM6315RGW13F 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 STM6315RGW13F reliable?
The price and inventory of STM6315RGW13F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM6315RGW13F is usually 5 days.
3.What payment methods are accepted for STM6315RGW13F?
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4.How is shipping managed for STM6315RGW13F?
STM6315RGW13F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM6315RGW13F 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 STM6315RGW13F?
For technical support, including STM6315RGW13F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM6315RGW13F requirements.
6.How does Aetrix verify that STM6315RGW13F is sourced from the original manufacturer or authorized distributors?
All STM6315RGW13F 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 STM6315RGW13F meets industry standards.
7.What is the process for return or replacement of STM6315RGW13F?
All STM6315RGW13F units undergo pre-shipment inspection (PSI). If there is an issue with STM6315RGW13F, 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 STM6315RGW13F part is unused and in its original packaging.
Return procedure for STM6315RGW13F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM6315RGW13F 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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