Overview
The M41T65Q6F is a low-power serial real-time clock (RTC) produced by STMicroelectronics. This component is designed to provide accurate timekeeping and various additional features, making it suitable for a wide range of applications. The M41T65Q6F operates as a slave device on a two-wire I²C serial interface and is available in a compact 3 x 3 mm QFN-16 package, which is lead-free and halogen-free (ECOPACK2).
Key Specifications
| Parameter | Value |
|---|---|
| Operating Voltage | 1.3 V to 4.4 V |
| Timekeeping Current | 350 nA at 3 V |
| I²C Bus Speed | Up to 400 kHz |
| Package Type | QFN-16, 3 x 3 mm |
| Temperature Range | -40 °C to +85 °C |
| Oscillator Frequency | 32.768 kHz |
| Alarm Functions | Programmable alarm with interrupt function |
| Watchdog Timer | Programmable watchdog timer (62.5 ms to 31 minutes timeout) |
| Calibration | Software clock calibration (± 2 ppm accuracy) |
| Output Signals | IRQ/FT/OUT, WDO, SQW (programmable square wave output) |
Key Features
- Low Power Consumption: The M41T65Q6F has a low timekeeping current of 350 nA at 3 V and operates down to 1.0 V, making it suitable for battery-powered devices.
- Accurate Timekeeping: The clock is driven by a quartz-controlled oscillator with a nominal frequency of 32.768 kHz and can be calibrated to achieve an accuracy of ± 2 ppm.
- Programmable Alarm and Watchdog: The device features a programmable alarm with interrupt function and a programmable watchdog timer with a timeout range of 62.5 ms to 31 minutes.
- Multiple Output Signals: It includes outputs such as IRQ/FT/OUT, WDO, and a programmable square wave output (SQW).
- Compact Package: Available in a very small 3 x 3 mm QFN-16 package, which is lead-free and halogen-free (ECOPACK2).
- I²C Interface: Communicates via a two-wire I²C serial interface with speeds up to 400 kHz.
Applications
- Consumer Electronics: Suitable for use in smart home devices, wearables, and other consumer electronics requiring accurate timekeeping.
- Industrial Automation: Can be used in industrial control systems, automation equipment, and IoT devices.
- Medical Devices: Applicable in medical devices that require precise timekeeping and low power consumption.
- Automotive Systems: Used in automotive systems for timing and synchronization purposes.
- Embedded Systems: Ideal for embedded systems that need a reliable and low-power RTC solution).
Q & A
- What is the operating voltage range of the M41T65Q6F?
The operating voltage range is from 1.3 V to 4.4 V.
- What is the timekeeping current of the M41T65Q6F at 3 V?
The timekeeping current is 350 nA at 3 V.
- What is the maximum I²C bus speed supported by the M41T65Q6F?
The maximum I²C bus speed is up to 400 kHz.
- What is the package type and size of the M41T65Q6F?
The package type is QFN-16, and the size is 3 x 3 mm.
- What is the temperature range of the M41T65Q6F?
The temperature range is from -40 °C to +85 °C.
- Does the M41T65Q6F support alarm functions?
Yes, it supports programmable alarm with interrupt function.
- What is the range of the watchdog timer in the M41T65Q6F?
The watchdog timer has a timeout range of 62.5 ms to 31 minutes.
- How accurate is the clock calibration of the M41T65Q6F?
The clock can be calibrated to achieve an accuracy of ± 2 ppm.
- What output signals are available on the M41T65Q6F?
The available output signals include IRQ/FT/OUT, WDO, and a programmable square wave output (SQW).
- Is the M41T65Q6F suitable for battery-powered devices?
Yes, it is suitable due to its low power consumption and ability to operate down to 1.0 V.
