Overview
The TPL5010DDCR, produced by Texas Instruments, is an ultra-low power system timer with a watchdog function. This component is designed to optimize power consumption in duty-cycled, battery-powered applications, particularly in the Internet of Things (IoT) sector. It allows a microcontroller (µC) to remain in a low power mode, waking up only at specified intervals to collect data or service interrupts, thereby maximizing current savings.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Supply Current | 35 nA (typical) | VDD-GND = 2.5 V, TA = 25°C |
| Operating Voltage Range | 1.8 V to 5.5 V | |
| Time Interval Range | 100 ms to 7200 s | |
| Quantization Error | Varies by interval (see Equation 3 in datasheet) | |
| Watchdog Function | WAKE and RSTn signals | |
| Manual Reset | DELAY/M_RST pin, minimum pulse duration of 20 ms | |
| External Resistance Range | 500 Ω to 170 kΩ | For selecting time interval |
Key Features
- Ultra-Low Power Consumption: Consumes only 35 nA, making it ideal for battery-powered applications.
- Watchdog Functionality: Issues periodic WAKE pulses to the µC and asserts RSTn if the DONE signal is not received within the specified time.
- Manual Reset: Allows for manual reset by pulling the DELAY/M_RST pin to VDD.
- Programmable Time Intervals: Supports 1650 discrete timer intervals from 100 ms to 7200 s using an external resistance.
- Low Power Mode Support: Enables the µC to remain in a low power mode, reducing overall system current consumption.
Applications
- Internet of Things (IoT): Ideal for IoT devices that require periodic wake-ups for data collection or servicing interrupts.
- Battery-Powered Devices: Suitable for any battery-powered system where minimizing power consumption is critical.
- Automotive Systems: Qualified for high-reliability automotive applications targeting zero defects.
- Industrial Automation: Can be used in industrial automation systems that require periodic wake-ups and watchdog functionality.
Q & A
- What is the primary function of the TPL5010?
The TPL5010 is an ultra-low power system timer with a watchdog function designed to wake up a microcontroller (µC) at specified intervals in duty-cycled, battery-powered applications.
- How does the TPL5010 reduce power consumption in a system?
The TPL5010 allows the µC to remain in a low power mode, waking up only when necessary, thereby reducing the overall system current consumption.
- What is the range of time intervals that the TPL5010 can be programmed for?
The TPL5010 can be programmed for time intervals ranging from 100 ms to 7200 s using an external resistance.
- How does the watchdog function work in the TPL5010?
The TPL5010 issues periodic WAKE pulses to the µC. If the µC does not issue a DONE signal within the specified time, the TPL5010 asserts the RSTn signal to reset the µC.
- What is the purpose of the DELAY/M_RST pin?
The DELAY/M_RST pin is used to select the time interval and to implement a manual reset function by pulling it to VDD for at least 20 ms.
- What is the typical supply current of the TPL5010?
The typical supply current of the TPL5010 is 35 nA.
- What is the operating voltage range of the TPL5010?
The operating voltage range of the TPL5010 is from 1.8 V to 5.5 V.
- How many discrete timer intervals can the TPL5010 generate?
The TPL5010 can generate 1650 discrete timer intervals.
- What types of applications is the TPL5010 suitable for?
The TPL5010 is suitable for IoT, battery-powered devices, automotive systems, and industrial automation where low power consumption and periodic wake-ups are necessary.
- Is the TPL5010 qualified for automotive applications?
Yes, the TPL5010 is qualified for high-reliability automotive applications targeting zero defects.
