STM795RM6E STMicroelectronics Integrated Circuit (Small Outline Packages) In Stock
STM795RM6E is a microprocessor voltage supervisor from STMicroelectronics that monitors a 2.55 V supply rail and asserts reset when voltage drops below threshold. It features a battery backup switch and integrated watchdog timer in an 8-pin SOIC package. Suitable for reliable power management in microcontroller and embedded processor designs.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- STM795RM6E 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
- Fixed 2.55 V undervoltage reset threshold for precise supply monitoring
- Integrated battery backup switch for seamless SRAM and RTC power transfer
- Hardware watchdog timer to detect and recover from firmware hangs
- Single-channel voltage supervisor in compact 8-pin SOIC (SOP-8) package
- Automatic reset assertion with controlled release delay for safe processor startup
- Wide operating temperature range suitable for industrial environments
Applications
STM795RM6E is used in embedded systems requiring guaranteed microprocessor reset during power-up, brown-out events, and firmware lock-ups, particularly in industrial controllers and communication equipment running off 2.5 V or 3.3 V regulated rails. Its battery backup switching capability makes it valuable in real-time clock circuits and SRAM-backed data acquisition systems that must preserve memory contents through main supply interruptions. The 8-pin SOIC package integrates cleanly into compact supervisor circuits alongside MCUs such as STM32 or dsPIC, replacing multiple discrete components with a single qualified supervisor device.
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 | +2.625V |
| 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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
At what supply voltage does STM795RM6E assert a reset signal to the connected processor?
STM795RM6E asserts an active reset output when the monitored supply voltage falls below its fixed 2.55 V threshold. The reset remains asserted until the supply recovers above 2.55 V and an internal delay of typically 200 ms elapses, ensuring the processor does not start execution on an unstable rail.
How does the battery backup switch in STM795RM6E protect SRAM and RTC circuits during main power loss?
When the main 2.55 V supply drops below threshold, STM795RM6E automatically switches the VBAT output to a connected backup battery, typically a 3 V CR2032 lithium cell. This seamless switchover maintains power to battery-backed SRAM and RTC modules without data loss, supporting retention times exceeding 10 years with a 230 mAh coin cell depending on load current.
What does the integrated watchdog timer in STM795RM6E do and how does it improve system reliability?
The watchdog timer in STM795RM6E requires the host processor to toggle a dedicated WDI pin at regular intervals, typically within a 1.6 s timeout window. If firmware hangs and fails to service the watchdog within the timeout period, the supervisor forces a hardware reset, restarting the processor and recovering the system without human intervention in unattended industrial installations.
Which applications benefit most from replacing a discrete reset circuit with STM795RM6E?
Industrial PLCs, smart energy meters, and embedded communication gateways benefit from STM795RM6E because it replaces an RC reset network, a comparator, and a discrete backup switch with a single 8-pin SOIC device occupying less than 20 mm² of PCB area. The fixed 2.55 V threshold precisely matches 2.5 V rail designs common in dsPIC, PIC24, and STM32 low-voltage MCU applications, improving reset accuracy over RC circuits which can vary by ±20% with component tolerance.
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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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