Overview
The M41T0M6E is a low-power serial real-time clock (RTC) manufactured by STMicroelectronics. This component is designed to provide accurate timekeeping and is integrated with a 32.768 kHz oscillator, which is controlled by an external crystal. The M41T0M6E operates as a slave device on an I2C bus, supporting a clock frequency of up to 400 kHz. It is particularly notable for its low standby current and wide operating voltage range, making it suitable for various applications requiring precise time and date tracking.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage | 2.0 to 5.5 | V |
| Standby Current | 0.9 µA (typ at 3 V) | µA |
| Oscillator Frequency | 32.768 kHz | kHz |
| SCL Clock Frequency | 0 to 400 | kHz |
| Operating Temperature | –40 to 85 | °C |
| Package Type | 8-lead SOIC | |
| Crystal Load Capacitance | 12.5 pF | pF |
Key Features
- Counters for seconds, minutes, hours, day, date, month, years, and century in binary coded decimal (BCD) format.
- Integrated 32.768 kHz oscillator with external crystal control and load capacitance of 12.5 pF.
- Oscillator stop detection for monitoring clock operation.
- Serial interface supporting I2C bus protocol.
- Low standby current of 0.9 µA (typical at 3 V).
- Special software programmable output.
- Operating temperature range of –40 to 85 °C.
Applications
The M41T0M6E is suitable for a variety of applications that require accurate time and date tracking, including:
- Consumer electronics such as clocks, watches, and other time-keeping devices.
- Industrial control systems and automation.
- Medical devices and equipment.
- Automotive systems requiring precise timing.
- Embedded systems and IoT devices.
Q & A
- What is the operating voltage range of the M41T0M6E?
The M41T0M6E operates within a voltage range of 2.0 to 5.5 V. - What is the typical standby current of the M41T0M6E?
The typical standby current is 0.9 µA at 3 V. - What type of oscillator does the M41T0M6E use?
The M41T0M6E uses a 32.768 kHz oscillator controlled by an external crystal. - What is the maximum SCL clock frequency supported by the M41T0M6E?
The maximum SCL clock frequency is 400 kHz. - What is the operating temperature range of the M41T0M6E?
The operating temperature range is –40 to 85 °C. - How does the M41T0M6E communicate with other devices?
The M41T0M6E communicates via an I2C bus. - What type of package is the M41T0M6E available in?
The M41T0M6E is available in an 8-lead SOIC package. - Does the M41T0M6E have any special features for century tracking?
Yes, it has a century enable bit (CEB) and a century bit (CB) to handle century changes. - Is the M41T0M6E still in production?
No, the M41T0M6E is obsolete and no longer manufactured. - What are some common applications of the M41T0M6E?
Common applications include consumer electronics, industrial control systems, medical devices, automotive systems, and embedded systems.
