Overview
The M41T11MH6E, produced by STMicroelectronics, is a low-power serial real-time clock (RTC) integrated circuit. It features 56 bytes of non-volatile RAM (NVRAM) and is designed for applications requiring precise timekeeping with minimal power consumption. The device includes a built-in 32.768 kHz oscillator controlled by an external crystal and supports an I²C bus interface for serial communication. The M41T11MH6E is particularly useful in systems that need to maintain time and date information even during power failures, thanks to its automatic switchover to a battery supply.
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 |
| Crystal Load Capacitance | 12.5 pF | pF |
| I²C Bus Frequency | 100 kHz | kHz |
| NVRAM Capacity | 56 bytes | bytes |
| Operating Temperature | –40 to 85°C | °C |
| Package Types | 8-lead SOIC, 28-lead SOIC with SNAPHAT® |
Key Features
- 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 NVRAM
- Software clock calibration to compensate for crystal deviation due to temperature
- Automatic leap year compensation
- I²C bus interface supporting 100 kHz protocol
- Built-in 32 kHz crystal oscillator with high stability and high crystal series resistance operation
- RoHS compliant and lead-free second level interconnect
Applications
The M41T11MH6E is suitable for a variety of applications that require accurate timekeeping and low power consumption. These include:
- Industrial control systems
- Medical devices
- Consumer electronics
- Automotive systems
- IoT devices
Q & A
- What is the typical battery supply current of the M41T11MH6E?
The typical battery supply current is 0.8 µA at 3 V. - What is the operating voltage range of the M41T11MH6E?
The operating voltage range is from 2.0 to 5.5 V. - What type of interface does the M41T11MH6E use for serial communication?
The M41T11MH6E uses an I²C bus interface. - How much NVRAM does the M41T11MH6E have?
The M41T11MH6E has 56 bytes of NVRAM. - What is the frequency of the built-in oscillator?
The frequency of the built-in oscillator is 32.768 kHz. - What is the operating temperature range of the M41T11MH6E?
The operating temperature range is from –40 to 85°C. - Does the M41T11MH6E support automatic leap year compensation?
Yes, it does support automatic leap year compensation. - What types of packages are available for the M41T11MH6E?
The M41T11MH6E is available in 8-lead SOIC and 28-lead SOIC with SNAPHAT® packages. - Is the M41T11MH6E RoHS compliant?
Yes, the M41T11MH6E is RoHS compliant and lead-free. - How does the M41T11MH6E handle power failures?
The M41T11MH6E automatically switches to the battery supply during power failures to maintain timekeeping.
