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Спецификации
| Атрибут | Ценность |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| Type | Clock/Calendar |
| Features | Alarm, Leap Year |
| TimeFormat | HH:MM:SS (12/24 hr) |
| DateFormat | YY-MM-DD-dd |
| Interface | I²C, 2-Wire Serial |
| Voltage-Supply | 1.3V ~ 5.5V |
| Current-Timekeeping(Max) | 14µA ~ 30µA @ 3V ~ 5V |
| OperatingTemperature | -40°C ~ 85°C |
| MountingType | Surface Mount |
| Package/Case | 8-SMD, Flat Lead |
| MemorySize | 1B |
| Voltage-SupplyBattery | 1.6V ~ 3.6V |
Обзор
Description
The DS1307 is a real-time clock (RTC) integrated circuit used to keep track of the current time and date. It operates on a low voltage (typically 3V to 5.5V) and communicates via I2C (Inter-Integrated Circuit) protocol, making it suitable for various microcontroller applications.
Key features include a programmable square wave output, battery backup to maintain time during power outages, and the ability to store time in both 12-hour and 24-hour formats. The DS1307 can also count seconds, minutes, hours, days, months, and years, supporting leap year calculations.
With a CMOS architecture, it offers low power consumption, making it ideal for battery-operated devices. Applications include clocks, data loggers, and any system requiring accurate timekeeping.
To use the DS1307, connect it to a microcontroller via I2C, configure its registers for the desired time format, and implement reading and writing functions to retrieve or set the time and date. Overall, the DS1307 is a reliable choice for embedded systems requiring precise timekeeping.
Key features include a programmable square wave output, battery backup to maintain time during power outages, and the ability to store time in both 12-hour and 24-hour formats. The DS1307 can also count seconds, minutes, hours, days, months, and years, supporting leap year calculations.
With a CMOS architecture, it offers low power consumption, making it ideal for battery-operated devices. Applications include clocks, data loggers, and any system requiring accurate timekeeping.
To use the DS1307, connect it to a microcontroller via I2C, configure its registers for the desired time format, and implement reading and writing functions to retrieve or set the time and date. Overall, the DS1307 is a reliable choice for embedded systems requiring precise timekeeping.
Equivalent
Equivalent products to the DS1307+ chip include the MCP7940N, PCF8563, and DS3231. These real-time clock (RTC) chips provide similar functionalities, such as timekeeping and calendar features, but may differ in accuracy, power consumption, and additional features like battery backup or temperature compensation. Always check the specific data sheets for detailed specifications to ensure compatibility with your application.
Features
The DS1307 is a real-time clock (RTC) integrated circuit that offers several key features:
1. Timekeeping: Maintains accurate time (hours, minutes, seconds) and date (day, month, year) information.
2. I2C Interface: Communicates via I2C protocol, allowing easy integration with microcontrollers.
3. Battery Backup: Supports a 3V battery backup for continuous operation during power outages.
4. 32.768 kHz Oscillator: Utilizes a crystal oscillator for precise timekeeping.
5. Leap Year Compensation: Automatically accounts for leap years in date calculations.
6. Alarm Function: Can generate alarms at specified times.
7. Temperature Compensation: Offers improved accuracy over a range of temperatures.
8. Power Consumption: Low power usage, making it suitable for battery-operated devices.
9. Programmable Square Wave Output: Generates a square wave signal for various applications.
10. User-Friendly: Simple to set up and program with minimal external components.
These features make the DS1307 ideal for applications requiring timekeeping capabilities in embedded systems.
1. Timekeeping: Maintains accurate time (hours, minutes, seconds) and date (day, month, year) information.
2. I2C Interface: Communicates via I2C protocol, allowing easy integration with microcontrollers.
3. Battery Backup: Supports a 3V battery backup for continuous operation during power outages.
4. 32.768 kHz Oscillator: Utilizes a crystal oscillator for precise timekeeping.
5. Leap Year Compensation: Automatically accounts for leap years in date calculations.
6. Alarm Function: Can generate alarms at specified times.
7. Temperature Compensation: Offers improved accuracy over a range of temperatures.
8. Power Consumption: Low power usage, making it suitable for battery-operated devices.
9. Programmable Square Wave Output: Generates a square wave signal for various applications.
10. User-Friendly: Simple to set up and program with minimal external components.
These features make the DS1307 ideal for applications requiring timekeeping capabilities in embedded systems.
Pinout
The DS1307+ is a real-time clock (RTC) IC with a total of 8 pins. Here is a brief overview of each pin's function:
1. VCC (Pin 1): Supply voltage (typically +5V).
2. GND (Pin 2): Ground reference.
3. SCL (Pin 3): I2C serial clock input.
4. SDA (Pin 4): I2C serial data input/output.
5. SQW/OUT (Pin 5): Square wave output or interrupt output.
6. RST (Pin 6): Reset input (active low).
7. VBAT (Pin 7): Backup supply voltage for keeping the time when VCC is removed.
8. 32kHz (Pin 8): 32.768 kHz output, typically used for clock applications.
The DS1307+ provides accurate timekeeping and can be interfaced with microcontrollers via I2C, making it suitable for battery-backed applications.
1. VCC (Pin 1): Supply voltage (typically +5V).
2. GND (Pin 2): Ground reference.
3. SCL (Pin 3): I2C serial clock input.
4. SDA (Pin 4): I2C serial data input/output.
5. SQW/OUT (Pin 5): Square wave output or interrupt output.
6. RST (Pin 6): Reset input (active low).
7. VBAT (Pin 7): Backup supply voltage for keeping the time when VCC is removed.
8. 32kHz (Pin 8): 32.768 kHz output, typically used for clock applications.
The DS1307+ provides accurate timekeeping and can be interfaced with microcontrollers via I2C, making it suitable for battery-backed applications.
Manufacturer
The DS1307+ is manufactured by Maxim Integrated, which is now part of Analog Devices, Inc. Founded in 1983, Maxim Integrated is a semiconductor company that specializes in designing and manufacturing analog and mixed-signal integrated circuits (ICs). Their products are used in various applications, including automotive, industrial, consumer electronics, and telecommunications. The company is known for its innovation in low-power solutions and high-performance analog components, providing a wide range of products such as sensors, amplifiers, power management ICs, and timing devices like the DS1307 real-time clock.
Application
The DS1307 is a real-time clock (RTC) integrated circuit commonly used in various application areas, including:
1. Embedded Systems: Timekeeping in microcontroller projects.
2. Consumer Electronics: Alarm clocks, microwaves, and appliances requiring time tracking.
3. Data Logging: Timestamping events in data loggers and environmental monitoring systems.
4. Home Automation: Scheduling and time-based control in smart home devices.
5. Industrial Automation: Time-stamped events in manufacturing processes and equipment monitoring.
6. Automotive: Timekeeping in dashboard displays and vehicle systems.
7. Telecommunications: Synchronizing operations and logging events.
Its low power consumption and I2C interface make it versatile for these applications.
1. Embedded Systems: Timekeeping in microcontroller projects.
2. Consumer Electronics: Alarm clocks, microwaves, and appliances requiring time tracking.
3. Data Logging: Timestamping events in data loggers and environmental monitoring systems.
4. Home Automation: Scheduling and time-based control in smart home devices.
5. Industrial Automation: Time-stamped events in manufacturing processes and equipment monitoring.
6. Automotive: Timekeeping in dashboard displays and vehicle systems.
7. Telecommunications: Synchronizing operations and logging events.
Its low power consumption and I2C interface make it versatile for these applications.
Package
The DS1307+ is typically available in an 8-pin DIP (Dual In-line Package) and an 8-pin SOIC (Small Outline Integrated Circuit) package. These compact packages are designed for easy integration into various electronic circuits for real-time clock applications.
Frequently Asked Questions
Q: What is the supply voltage range for the DS1307+?
A: The DS1307+ operates from 1.3V to 5.5V, making it suitable for low-power and battery-backed applications.
Q: Does this RTC support alarm and leap year functions?
A: Yes, it features an alarm output and automatically compensates for leap years up to 2100.
Q: What is the typical timekeeping current consumption?
A: It draws a maximum of 14μA to 30μA at 3V to 5V, ideal for battery-operated designs.
Q: What communication interface does the DS1307+ use?
A: It uses an I2C (2-wire serial) interface for easy connection to microcontrollers.
Q: What battery voltage range is required for backup operation?
A: A backup battery between 1.6V and 3.6V is required to maintain timekeeping when main power is lost.
Q: Is this component surface mount or through-hole?
A: Despite the PDIP-8 package code, the specifications show it is surface mount in an 8-SMD flat lead package.
Q: What time and date formats are supported?
A: It supports 12/24-hour format for time and YY-MM-DD-dd format for date, with AM/PM indicator.
