STM806SM6E STMicroelectronics Integrated Circuit (Small Outline Packages) In Stock
STMicroelectronics STM806SM6E is a single-channel processor supervisor with active-low reset output, battery backup switch, and watchdog timer operating from 1V to 5.5V supply in an 8-pin SOIC package. It monitors power-on conditions and generates a clean reset pulse for microcontrollers and DSPs. Available in stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- STM806SM6E Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Single-channel voltage supervisor with active-low reset covering 1V to 5.5V supply range for wide MCU compatibility
- Integrated battery backup switch automatically transfers load to backup supply during main power loss without external logic
- Built-in watchdog timer (WD) monitors firmware execution and forces reset on timeout, improving embedded system reliability
Applications
The STM806SM6E is used in microcontroller-based systems requiring reliable power-on reset supervision, such as industrial PLCs, medical monitors, and automotive body control modules. Its integrated battery backup switch ensures that SRAM or RTC circuitry retains data during power outages, making it valuable in metering equipment, data loggers, and safety-critical embedded platforms.
Specifications
| YTEOL | 0 |
| Additional Feature | BAT BUP SW:Y;MNL RST:N;OV DET:N;PW FL IP:N;PW FL IO:N;PW FL OP:N;PRG RST DLY:N;UV DET:N;WD:Y;WWD:N |
| Adjustable Threshold | NO |
| Analog IC - Other Type | VOLTAGE SUPERVISOR/RESET IC |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 0.06mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.1V |
| Supply Voltage-Nom (Vsup) | 3.6V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +2.925V |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for STM806SM6E:
Frequently Asked Questions
What supply voltage range does the STM806SM6E support and which microcontroller families is it compatible with?
The STM806SM6E operates across a 1V to 5.5V supply range, making it compatible with 1.8V, 3.3V, and 5V microcontrollers including STM32, PIC, AVR, and MSP430 families. The active-low open-drain reset output connects directly to the NRST pin without additional level-shifting circuitry.
How does the battery backup switch in STM806SM6E protect SRAM data during main power loss?
When the STM806SM6E detects that the main supply voltage drops below the reset threshold, it automatically switches the backup supply path to the VBAT pin with a transition time under 1µs, preventing data corruption in battery-backed SRAM or RTC modules. This eliminates the need for an external MOSFET or diode switchover circuit in low-power embedded designs.
Does the STM806SM6E watchdog timer require external components to function?
No external components are required for the STM806SM6E watchdog timer. The on-chip WD timer monitors a periodic strobe signal from the MCU firmware; if the WDI input is not toggled within the programmed timeout window (typically 1.6 seconds), the device asserts the active-low reset output to restart the processor, all without resistors or capacitors beyond the supply bypass.
How does the 8-pin SOIC package of STM806SM6E fit into space-constrained PCB designs?
The STM806SM6E 8-pin SOIC package occupies approximately 5mm x 4mm of PCB area with 1.27mm lead pitch, allowing hand soldering during prototyping and reflow in production. Its small outline footprint integrates reset supervision, battery backup switching, and watchdog into a single 8-pin device, replacing what would otherwise require 3 to 4 discrete components on the board.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
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