Overview
The SR1UARU is a Smart Reset™ device produced by STMicroelectronics. This component is designed to provide a reliable and flexible reset solution for various electronic systems. It operates within a broad voltage range of 2.0 V to 5.5 V and features low supply current, making it suitable for power-sensitive applications. The SR1UARU integrates a single Smart Reset input with adjustable reset setup delay and output reset pulse duration, offering flexibility in system design.
Key Specifications
| Parameter | Description | Value | Unit |
|---|---|---|---|
| Operating Voltage Range | Voltage range for device operation | 2.0 to 5.5 | V |
| Supply Current | Current drawn by the device | 0.4 to 1.0 | µA |
| Smart Reset Setup Delay (tSRC) | Adjustable delay time for reset setup | 0.5 to 10 | s (in 0.5 s steps) |
| Reset Timeout Delay (tREC) | Factory-programmed reset pulse duration | 140 to 480 | ms |
| Operating Temperature | Temperature range for device operation | -40 to +85 | °C |
| Reset Output Type | Type of reset output signal | Active low, open drain or push-pull | |
| Package Type | Physical package of the device | UDFN-6L (1.45x1 mm) |
Key Features
- Low Supply Current: The device draws a low supply current of 1 µA, making it suitable for battery-powered and low-power applications.
- Adjustable Reset Setup Delay: The Smart Reset setup delay (tSRC) is adjustable from 0.5 s to 10 s in 0.5 s steps, providing flexibility in system design.
- Factory-Programmed Reset Pulse Duration: The reset timeout delay (tREC) can be factory-programmed, offering options for different reset pulse durations.
- Integrated Test Mode: The device includes an integrated test mode for easy testing and debugging.
- High Glitch Immunity: The SR1UARU features high glitch immunity, ensuring reliable operation in noisy environments.
- ECOPACK®2 Compliance: The device is RoHS compliant and halogen-free, meeting environmental standards.
Applications
- Wearable Devices: Suitable for wearable devices such as smartwatches, activity trackers, and smartglasses due to its low power consumption and compact package.
- Consumer Electronics: Used in various consumer electronics requiring reliable reset mechanisms, such as handheld devices and IoT applications.
- Industrial Automation: Can be applied in industrial automation systems where robust and reliable reset functions are necessary.
Q & A
- What is the operating voltage range of the SR1UARU?
The SR1UARU operates within a voltage range of 2.0 V to 5.5 V.
- What is the typical supply current of the SR1UARU?
The typical supply current is 1 µA.
- How is the Smart Reset setup delay (tSRC) adjusted?
The tSRC is adjustable from 0.5 s to 10 s in 0.5 s steps.
- What types of reset output are available for the SR1UARU?
The reset output can be active low, open drain, or push-pull.
- What is the package type of the SR1UARU?
The device comes in a UDFN-6L package (1.45x1 mm).
- Is the SR1UARU environmentally friendly?
Yes, it is RoHS compliant and halogen-free, meeting ECOPACK®2 standards.
- What is the operating temperature range of the SR1UARU?
The device operates within a temperature range of -40 °C to +85 °C.
- How does the integrated test mode work?
The test mode is entered by pulling the SR input to VTEST (VCC + 1.4 V or above), and it provides feedback and allows for quick testing without repeating test mode triggering.
- What are some common applications of the SR1UARU?
It is commonly used in wearable devices, consumer electronics, and industrial automation systems.
- Can the reset pulse duration be customized?
Yes, the reset timeout delay (tREC) can be factory-programmed to different values.
