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M41T256YMT7E - English Editing Encyclopedia Entry
Product Overview
Category
M41T256YMT7E belongs to the category of Real-Time Clocks (RTCs).
Use
This product is primarily used for timekeeping and calendar functions in various electronic devices.
Characteristics
- Accurate timekeeping with low power consumption
- Non-volatile memory for data storage
- I2C interface for easy integration
- Wide operating voltage range
- Temperature-compensated crystal oscillator (TCXO) for enhanced accuracy
Package
M41T256YMT7E is available in a small surface-mount package, typically measuring 8mm x 6.2mm.
Essence
The essence of M41T256YMT7E lies in its ability to provide reliable and precise timekeeping functionality to electronic devices.
Packaging/Quantity
This product is commonly packaged in reels or tubes, with quantities varying based on customer requirements.
Specifications
- Supply Voltage: 1.8V to 5.5V
- Timekeeping Accuracy: ±2ppm at 25°C
- Operating Temperature Range: -40°C to +85°C
- Data Retention: Over 10 years
- I2C Bus Frequency: Up to 400kHz
Detailed Pin Configuration
The M41T256YMT7E RTC has the following pin configuration:
| Pin Name | Description | |----------|-------------| | VCC | Power supply input | | GND | Ground connection | | SDA | Serial Data Line for I2C communication | | SCL | Serial Clock Line for I2C communication | | SQW/INT | Square Wave Output / Interrupt output | | VBAT | Backup battery input for data retention |
Functional Features
- Time and date information with seconds, minutes, hours, day, month, and year
- Alarm functionality with programmable interrupt output
- Automatic leap year compensation
- Power-fail detection and switch circuitry for backup battery operation
- User-programmable calibration
Advantages and Disadvantages
Advantages
- High accuracy timekeeping
- Low power consumption
- Compact package size
- Wide operating voltage range
- Easy integration with I2C interface
Disadvantages
- Limited availability of alternative models
- Relatively higher cost compared to some other RTCs
Working Principles
M41T256YMT7E utilizes a temperature-compensated crystal oscillator (TCXO) to maintain accurate timekeeping. It communicates with the host device through the I2C bus, allowing for easy configuration and data exchange. The backup battery ensures data retention during power loss.
Detailed Application Field Plans
The M41T256YMT7E RTC finds applications in various electronic devices, including but not limited to: - Consumer electronics (e.g., digital cameras, set-top boxes) - Industrial automation systems - Medical equipment - Automotive electronics - Smart meters
Detailed and Complete Alternative Models
While M41T256YMT7E is a reliable RTC, there are alternative models available in the market that offer similar functionality. Some notable alternatives include: - DS3231 - Real-Time Clock Module by Maxim Integrated - PCF8563 - Real-Time Clock by NXP Semiconductors - MCP7940N - Real-Time Clock/Calendar by Microchip Technology
These alternative models can be considered based on specific requirements and availability.
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Énumérez 10 questions et réponses courantes liées à l'application de M41T256YMT7E dans les solutions techniques
Sure! Here are 10 common questions and answers related to the application of M41T256YMT7E in technical solutions:
Q: What is the M41T256YMT7E? A: The M41T256YMT7E is a real-time clock (RTC) module with integrated crystal, designed for accurate timekeeping in various technical applications.
Q: How does the M41T256YMT7E communicate with other devices? A: The M41T256YMT7E communicates using the I2C (Inter-Integrated Circuit) protocol, making it compatible with a wide range of microcontrollers and other devices.
Q: Can the M41T256YMT7E operate on its own without an external microcontroller? A: Yes, the M41T256YMT7E has a built-in oscillator and battery backup, allowing it to function independently and maintain accurate timekeeping even when disconnected from a microcontroller.
Q: What is the power supply requirement for the M41T256YMT7E? A: The M41T256YMT7E operates on a voltage range of 2.7V to 5.5V, making it compatible with a variety of power sources commonly used in electronic systems.
Q: Does the M41T256YMT7E have any non-volatile memory? A: Yes, the M41T256YMT7E includes 256 kilobits of EEPROM (Electrically Erasable Programmable Read-Only Memory), which can be used to store additional data or configuration settings.
Q: Can the M41T256YMT7E generate alarms or interrupts? A: Yes, the M41T256YMT7E has programmable alarm registers that can trigger an interrupt or set an output pin high when a specific time or date condition is met.
Q: What is the accuracy of the M41T256YMT7E's timekeeping? A: The M41T256YMT7E has a typical timekeeping accuracy of ±5 ppm (parts per million), which translates to a maximum deviation of 0.432 seconds per day.
Q: Can the M41T256YMT7E be used in battery-powered applications? A: Yes, the M41T256YMT7E has a low power consumption mode and includes a backup battery input, making it suitable for use in battery-powered devices.
Q: Is the M41T256YMT7E resistant to temperature variations? A: Yes, the M41T256YMT7E has an integrated temperature sensor and compensation circuitry, allowing it to maintain accurate timekeeping even in varying temperature conditions.
Q: Are there any development resources available for the M41T256YMT7E? A: Yes, STMicroelectronics provides a datasheet, application notes, and software libraries to assist with the integration and programming of the M41T256YMT7E into technical solutions.
Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.