Overview
The STM708SM6F is a microprocessor supervisor IC produced by STMicroelectronics. It is part of the STM70x family, designed to provide essential supervisory functions for microprocessors. This device includes a precision voltage reference and comparator that monitors the VCC input for out-of-tolerance conditions, triggering a reset output if such a condition occurs. The STM708SM6F is available in an 8-pin SOIC package and is suitable for industrial-grade applications with an operating temperature range of –40 °C to 85 °C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reset Threshold Voltage (VRST) | 2.93 | V |
| Operating Voltage Range | 1.2 to 5.5 | V |
| Reset Output Type | Active-Low, Push-Pull | |
| Reset Timeout Period (trec) | 200 ms (typ.) | ms |
| Supply Current | 40 μA (typ.) | μA |
| Operating Temperature Range | –40 °C to 85 °C | °C |
| Package Type | SO-8 | |
| RoHS Compliance | Ecopack3 |
Key Features
- Precision VCC Monitor: Monitors the VCC input for out-of-tolerance conditions.
- Reset Output: Provides active-low reset output (RST) that is asserted when VCC falls below the reset threshold.
- Manual Reset Input (MR): Allows for manual reset via an active-low input.
- Power-Fail Comparator (PFI/PFO): Detects impending power failure and provides an early warning signal.
- Low Supply Current: Typical supply current of 40 μA.
- Guaranteed Reset Assertion: Ensures reset output is asserted down to VCC = 1.0 V.
- Operating Temperature Range: –40 °C to 85 °C.
- RoHS Compliance: Compliant with the RoHS directive.
Applications
The STM708SM6F is suitable for a variety of applications where microprocessor supervision is critical, including:
- Embedded systems requiring reliable power monitoring and reset functions.
- Industrial control systems where robust and accurate voltage monitoring is essential.
- Automotive and aerospace systems that demand high reliability and precision in power management.
- Consumer electronics and IoT devices needing efficient and reliable power supervision.
Q & A
- What is the primary function of the STM708SM6F?
The primary function of the STM708SM6F is to provide microprocessor supervisory functions, including monitoring the VCC input for out-of-tolerance conditions and asserting a reset output if necessary.
- What is the reset threshold voltage for the STM708SM6F?
The reset threshold voltage for the STM708SM6F is typically 2.93 V.
- What type of reset output does the STM708SM6F provide?
The STM708SM6F provides an active-low reset output (RST).
- How does the manual reset input (MR) work?
The manual reset input (MR) is an active-low input that asserts the reset output when it is driven low. The reset remains asserted as long as MR is low and for the reset timeout period after MR returns high.
- What is the purpose of the power-fail comparator (PFI/PFO)?
The power-fail comparator detects impending power failure and provides an early warning signal through the power-fail output (PFO).
- What is the typical supply current of the STM708SM6F?
The typical supply current of the STM708SM6F is 40 μA.
- What is the operating temperature range of the STM708SM6F?
The operating temperature range of the STM708SM6F is –40 °C to 85 °C.
- Is the STM708SM6F RoHS compliant?
Yes, the STM708SM6F is RoHS compliant, specifically with the Ecopack3 grade.
- In what package is the STM708SM6F available?
The STM708SM6F is available in an 8-pin SOIC package.
- How does the reset output behave when VCC falls below the reset threshold?
When VCC falls below the reset threshold, the reset output (RST) is asserted low and remains low until VCC rises above the reset threshold and for the reset timeout period thereafter.
