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M41T81M6F
+Lista de MateriaisIC RTC CLK/CALENDAR I2C 8-SOIC
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FabricanteSTMicroeletrônica
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Peça do Fabricante #M41T81M6F
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Ficha Técnica M41T81M6F DataSheet
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Pacote SOIC-8
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Especificações
| Atributo | Valor |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| Type | Clock/Calendar |
| Features | Alarm, Leap Year, Square Wave Output, Watchdog Timer |
| TimeFormat | HH:MM:SS:hh (24 hr) |
| DateFormat | YY-MM-DD-dd |
| Interface | I²C, 2-Wire Serial |
| Voltage-Supply | 2V ~ 5.5V |
| Voltage-SupplyBattery | 2.5V ~ 3.5V |
| Current-Timekeeping(Max) | 100µA @ 2V ~ 5.5V |
| OperatingTemperature | -40°C ~ 85°C |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Visão Geral
Description
Key features of the M41T81M6F include:
1. Timekeeping: Provides information on seconds, minutes, hours, day, date, month, and year, with automatic leap-year compensation.
2. Interface: Utilizes an I2C bus interface for communication with the microcontroller, making it easy to integrate with various systems.
3. Alarm Functionality: Includes programmable alarm functions to trigger events at specific times.
4. Low Power Consumption: Optimized for low power operation, essential for battery-powered applications.
5. Operating Temperature: Designed to function effectively across a wide temperature range, suitable for diverse applications.
This RTC is commonly used in embedded systems, industrial automation, and consumer electronics to maintain accurate timekeeping and event scheduling.
Equivalent
1. DS1307 - Maxim Integrated
2. PCF8563 - NXP
3. DS3231 - Maxim Integrated
4. RV-3028-C7 - Micro Crystal
5. MCP7940M - Microchip Technology
Ensure compatibility by checking the specific features, package types, and voltage requirements of each alternative before substituting.
Features
1. Interface: It uses an I²C serial interface for communication, which is common in embedded systems for easy integration.
2. Timekeeping: The RTC tracks seconds, minutes, hours, day, date, month, and year, with built-in leap year compensation up to 2100.
3. Low Power: It is designed for low power consumption, making it suitable for battery-operated devices.
4. Backup Supply: The RTC can switch to a backup battery supply in the event of a main power failure, ensuring continuous timekeeping.
5. Programmable Alarm: It includes a programmable alarm function, which can be set to trigger interrupts.
6. Clock Output: The device provides a programmable square wave output.
7. 32.768 kHz Oscillator: It typically uses an external 32.768 kHz crystal for timekeeping accuracy.
8. Operating Temperature: It operates over a wide temperature range, suitable for various environments.
These features make the M41T81M6F ideal for applications requiring reliable timekeeping, such as data loggers, industrial systems, and consumer electronics.
Pinout
1. VCC (Pin 1): Power supply pin.
2. VBAT (Pin 2): Battery supply voltage input; used to maintain timekeeping when the primary power is lost.
3. OSCI (Pin 3): Oscillator input pin; connected to an external 32.768 kHz crystal.
4. OSCO (Pin 4): Oscillator output pin; works with the OSCI pin for the crystal oscillator.
5. SCL (Pin 5): Serial Clock Line; used for I2C communication.
6. SDA (Pin 6): Serial Data Line; used for I2C communication.
7. FT/OUT (Pin 7): Frequency Test or Output pin; can be used for a programmable square wave output.
8. GND (Pin 8): Ground pin.
The M41T81M6F is primarily used to keep track of time and date information in various electronic devices, using a low-power oscillator and battery backup function.
Manufacturer
Application
1. Consumer Electronics: Used in devices like TVs, set-top boxes, and audio systems to maintain accurate timekeeping and support features such as timed recordings.
2. Computers and Networking: Ensures accurate timekeeping in servers, routers, and computers for timestamping, log management, and time synchronization.
3. Industrial Systems: Used in automation systems and data loggers to ensure accurate task scheduling and data recording.
4. Automotive: Supports infotainment systems and navigation devices by maintaining real-time data.
5. Healthcare Devices: Maintains accurate time in medical equipment for data logging and scheduling.
These applications benefit from the RTC's low power consumption and high accuracy.