Overview
The M41T11M6F is a low-power serial real-time clock (RTC) produced by STMicroelectronics. This component integrates a 32.768 kHz oscillator, which is external crystal controlled, and includes 56 bytes of non-volatile RAM (NVRAM). The device is designed for applications requiring precise timekeeping and data storage, even in the event of power failures. It automatically switches to a battery supply during power failures, ensuring continuous operation. The M41T11M6F is available in an 8-lead plastic small outline package (SOIC) and is RoHS compliant, making it suitable for a wide range of industrial and consumer electronics applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage | 2.0 to 5.5 | V |
| Battery Supply Current | 0.8 μA (typ. at 3 V) | μA |
| Oscillator Frequency | 32.768 kHz | kHz |
| Serial Interface | I²C bus (100 kHz protocol) | |
| NVRAM Size | 56 bytes | bytes |
| Operating Temperature | –40 to 85°C | °C |
| Package Type | 8-lead SOIC | |
| RoHS Compliance | Ecopack3 |
Key Features
- Counters for seconds, minutes, hours, day, date, month, years, and century
- 32 kHz crystal oscillator integrating load capacitance (12.5 pF) for exceptional oscillator stability
- Serial interface supports I²C bus (100 kHz protocol)
- Ultra-low battery supply current of 0.8 μA (typ. at 3 V)
- Automatic switchover and deselect circuitry for power failure detection
- 56 bytes of general-purpose RAM
- Software clock calibration to compensate for crystal deviation due to temperature
- Automatic leap year compensation
- Packaging includes a 28-lead SOIC and SNAPHAT® top (to be ordered separately)
- RoHS compliant and lead-free second level interconnect
Applications
The M41T11M6F is suitable for a variety of applications that require accurate timekeeping and data storage. These include:
- Industrial control systems
- Consumer electronics such as set-top boxes, DVD players, and gaming consoles
- Medical devices requiring precise timing and data logging
- Automotive systems for clock and calendar functions
- Embedded systems and IoT devices needing low-power timekeeping solutions
Q & A
- What is the primary function of the M41T11M6F?
The M41T11M6F is a low-power serial real-time clock (RTC) with 56 bytes of NVRAM, designed for precise timekeeping and data storage.
- What type of oscillator does the M41T11M6F use?
The M41T11M6F uses a 32.768 kHz crystal oscillator, which is external crystal controlled.
- What is the operating voltage range of the M41T11M6F?
The operating voltage range is 2.0 to 5.5 V.
- How does the M41T11M6F handle power failures?
The device automatically switches to a battery supply during power failures, ensuring continuous operation.
- What is the typical battery supply current of the M41T11M6F?
The typical battery supply current is 0.8 μA at 3 V.
- What type of serial interface does the M41T11M6F support?
The M41T11M6F supports the I²C bus (100 kHz protocol).
- How much NVRAM does the M41T11M6F have?
The M41T11M6F has 56 bytes of NVRAM.
- What is the operating temperature range of the M41T11M6F?
The operating temperature range is –40 to 85°C.
- Is the M41T11M6F RoHS compliant?
Yes, the M41T11M6F is RoHS compliant and has a lead-free second level interconnect.
- What types of packages are available for the M41T11M6F?
The M41T11M6F is available in an 8-lead SOIC package and a 28-lead SNAPHAT® package.
