Overview
The STM1001TWX6F is a low-power supervisory device produced by STMicroelectronics, designed to monitor power supplies and assert a reset signal to a microcontroller (MCU) when the supply voltage drops below a preset threshold. This device is particularly useful in ensuring the stable operation of microprocessors by providing a precise and reliable reset function.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| VCC Operating Voltage | 1.2 to 5.5 | V |
| ICC VCC Supply Current | 5.5 to 15 | µA |
| Reset Threshold (VRST) | 2.55 to 4.75 | V |
| RST Pulse Width (trec) | 140 to 280 | ms |
| Operating Temperature | –40 to 85 | °C |
| Package Type | SOT23-3 | |
| Output Type | Open Drain | |
| Power Dissipation | 320 | mW |
Key Features
- Precision monitoring of 3 V, 3.3 V, and 5 V supply voltages
- Open drain RST output requiring a pull-up resistor
- Low supply current: 6 µA (typical)
- Guaranteed RST assertion down to VCC = 1.0 V
- Operating temperature range: –40 °C to 85 °C (industrial grade)
- Lead-free, small SOT23 package
- Immunity to negative-going VCC transients (glitches)
Applications
The STM1001TWX6F is suitable for a variety of applications where reliable power supply monitoring and reset functionality are critical. These include:
- Microprocessor and microcontroller systems
- Embedded systems requiring power supply supervision
- Industrial control systems
- Automotive electronics
- Consumer electronics where power stability is essential
Q & A
- What is the primary function of the STM1001TWX6F?
The primary function is to monitor the power supply and assert a reset signal to the MCU when the supply voltage drops below a preset threshold. - What are the typical supply current values for the STM1001TWX6F?
The typical supply current values are 5.5 to 15 µA. - What is the operating temperature range of the STM1001TWX6F?
The operating temperature range is –40 °C to 85 °C. - What type of package does the STM1001TWX6F come in?
The STM1001TWX6F comes in a lead-free, small SOT23-3 package. - Does the STM1001TWX6F require a pull-up resistor for the RST output?
Yes, the RST output is an open drain and requires a pull-up resistor. - How does the STM1001TWX6F handle negative-going VCC transients?
The device is relatively immune to negative-going VCC transients (glitches) and can handle transients without generating a reset pulse under certain conditions. - What are the reset pulse width options for the STM1001TWX6F?
The reset pulse width options are 140 to 280 ms. - What is the maximum power dissipation of the STM1001TWX6F?
The maximum power dissipation is 320 mW. - Is the STM1001TWX6F suitable for industrial applications?
Yes, it is suitable for industrial applications due to its industrial-grade operating temperature range and reliability. - Can the STM1001TWX6F be used in automotive electronics?
Yes, it can be used in automotive electronics where reliable power supply monitoring is crucial.
