Overview
The SR1PAAU is a supervisory circuit produced by STMicroelectronics, designed to provide a reliable and efficient reset mechanism for microcontrollers and other digital systems. This device operates within a broad voltage range of 2.0 V to 5.5 V, making it versatile for various applications. The SR1PAAU features a single Smart Reset™ push-button input with adjustable reset delay times, ensuring robust system reset capabilities.
Key Specifications
| Parameter | Description | Value | Unit |
|---|---|---|---|
| Operating Voltage Range | Voltage range over which the device operates | 2.0 to 5.5 | V |
| Supply Current | Current drawn by the device | 0.4 to 1.0 | µA |
| Smart Reset Delay (tSRC) | Adjustable reset delay time | 0.5 s to 10 s (in 0.5 s steps) | s |
| Reset Output Type | Type of reset output | Active low or active high, push-pull or open drain | |
| Reset Output Pulse Duration (tREC) | Optional fixed reset pulse duration | Factory-programmed (e.g., 210 ms, 360 ms) | ms |
| Operating Temperature | Temperature range over which the device operates | -40 to +85 | °C |
| Package Type | Type of package | UDFN6 (1.00 mm x 1.45 mm) | |
| ECOPACK® Compliance | Environmental compliance | RoHS compliant, Halogen-Free |
Key Features
- Adjustable Reset Delay: The SR1PAAU offers adjustable Smart Reset delay times from 0.5 s to 10 s in 0.5 s steps, allowing for customized reset behaviors.
- Low Supply Current: The device consumes a very low supply current of 1 µA, making it suitable for battery-powered and low-power applications.
- Integrated Test Mode: The device includes an integrated test mode that allows for quick testing without repeating the test mode triggering process.
- Flexible Reset Output: The reset output can be configured as active low or active high, and as push-pull or open drain with optional pull-up resistors.
- High Glitch Immunity: The device is designed with high glitch immunity to ensure reliable operation in noisy environments.
- Compact Package: The UDFN6 package is compact (1.00 mm x 1.45 mm), making it ideal for space-constrained designs.
Applications
- Wearable Devices: Suitable for wearable devices such as smartwatches, activity trackers, and smartglasses due to its low power consumption and compact size.
- Consumer Electronics: Can be used in various consumer electronics requiring reliable reset mechanisms, such as handheld devices and IoT applications.
- Industrial Automation: Applicable in industrial automation systems where robust and reliable reset functions are critical.
Q & A
- What is the operating voltage range of the SR1PAAU?
The SR1PAAU operates within a voltage range of 2.0 V to 5.5 V.
- What is the typical supply current of the SR1PAAU?
The typical supply current is 1 µA.
- What are the available Smart Reset delay times for the SR1PAAU?
The Smart Reset delay times range from 0.5 s to 10 s in 0.5 s steps.
- Can the reset output of the SR1PAAU be configured?
Yes, the reset output can be configured as active low or active high, and as push-pull or open drain with optional pull-up resistors.
- What is the operating temperature range of the SR1PAAU?
The device operates over a temperature range of -40 °C to +85 °C.
- What package type is the SR1PAAU available in?
The SR1PAAU is available in a UDFN6 package (1.00 mm x 1.45 mm).
- Is the SR1PAAU environmentally compliant?
Yes, the SR1PAAU is RoHS compliant and Halogen-Free, meeting ECOPACK®2 standards.
- How does the test mode work on the SR1PAAU?
The test mode is entered by pulling the SR input to VTEST (VCC + 1.4 V or above), allowing for quick testing without repeating the test mode triggering process.
- What are some typical applications of the SR1PAAU?
The SR1PAAU is suitable for wearable devices, consumer electronics, and industrial automation systems.
- Where can I purchase the SR1PAAU?
The SR1PAAU can be purchased from various distributors such as Farnell, Xon Electronics, and the STMicroelectronics eStore.
