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M41T82RM6F
+BOMIC RTC CLK/CALENDAR I2C 8-SOIC
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ManufacturerSTMicroelectronics
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Mfr. Part #M41T82RM6F
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Datasheet M41T82RM6F DataSheet
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Package SOIC-8
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In Stock5987
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Specifications
| Attribute | Value |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| Type | Clock/Calendar |
| Features | Alarm, Leap Year, SRAM, Watchdog Timer |
| MemorySize | 7B |
| TimeFormat | HH:MM:SS:hh (24 hr) |
| DateFormat | YY-MM-DD-dd |
| Interface | I²C, 2-Wire Serial |
| Voltage-Supply | 2.7V ~ 5.5V |
| Voltage-SupplyBattery | 2V ~ 5.5V |
| Current-Timekeeping(Max) | 10µA @ 5.5V |
| OperatingTemperature | -40°C ~ 85°C |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Overview
Description
Key features of the M41T82 include its ability to operate in a wide range of temperatures and its low supply current, enhancing its application in various environments. It supports a backup battery input to maintain timekeeping during power failures, ensuring continuity. The device communicates with the host system via an I²C interface, which is standard in many microcontrollers, providing easy integration.
The M41T82 is often used in applications such as data loggers, portable devices, and any digital system that requires an accurate and reliable clock. It ensures that devices maintain accurate timekeeping even when they are turned off or disconnected from a main power source.
Equivalent
1. DS3231: Maxim Integrated offers this RTC with high accuracy and an integrated temperature-compensated crystal oscillator.
2. PCF8523: NXP provides this low-power RTC with a wide operating temperature range.
3. RX8130CE: Epson's RTC module with a built-in crystal oscillator.
4. MCP7940N: Microchip's RTC with non-volatile memory for timekeeping and alarms.
Always check datasheets to ensure compatibility with specific requirements.
Features
1. Timekeeping: Includes a clock/calendar function that tracks seconds, minutes, hours, day, date, month, and year, with leap year compensation until 2100.
2. Alarm Function: Supports programmable alarms with interrupt outputs for generating wake-up signals.
3. Battery Backup: Equipped with battery switchover capability to maintain timekeeping in the absence of main power.
4. Low Power Consumption: Designed for minimal power usage to extend battery life, making it suitable for portable applications.
5. I2C Interface: Communicates over an I2C bus, allowing easy integration with microcontrollers and other I2C-compatible devices.
6. Programmable Square-Wave Output: Provides flexible output frequencies for additional timing requirements.
7. Operating Voltage: Functions over a wide voltage range, enhancing compatibility with various systems.
8. Temperature Compensation: Offers options for temperature compensation to ensure accuracy across temperature variations.
These features make the M41T82RM6F suitable for applications requiring reliable timekeeping, such as in embedded systems, industrial controls, and consumer electronics.
Pinout
1. VCC: Supply voltage for the device.
2. VBAT: Backup battery voltage input.
3. SDA: Serial data input/output for the I2C interface.
4. SCL: Serial clock input for the I2C interface.
5. FT/OUT: Frequency test or programmable square wave output.
6. OSCIN: Oscillator input.
7. OSCOUT: Oscillator output.
8. GND: Ground connection.
The M41T82RM6F is designed to provide a timekeeping function, including seconds, minutes, hours, day, date, month, and year, with leap year compensation. It can operate from both a main power supply and a backup battery, ensuring timekeeping continuity even during power interruptions. The device interfaces with microcontrollers using an I2C serial interface, and it includes features such as programmable square wave output and alarms.
Manufacturer
Application
1. Consumer Electronics: Devices like digital cameras, DVD players, and smart TVs for maintaining accurate time and date settings.
2. Industrial Automation: Timing for process control and logging.
3. Computing: Desktop and notebook computers for system clock and calendar functions.
4. Telecommunications: Network equipment for time-stamping and synchronization.
5. Automotive: In-vehicle systems for timekeeping and event scheduling.
6. IoT Devices: Maintaining accurate time in low-power and battery-operated devices.
These applications benefit from the M41T82RM6F's low power consumption and reliable timekeeping features.