DS1307+

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DS1307+

IC RTC CLK/CALENDAR I2C 8-DIP

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  • Ông. Phần #DS1307+
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Thông số kỹ thuật

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

Tổng quan

Description

The DS1307 is a real-time clock (RTC) integrated circuit designed for keeping accurate time and date in electronic devices. Operated via the I2C interface, it features a 56-byte EEPROM for data storage and a low power consumption mode, making it suitable for battery-powered applications. The DS1307 tracks seconds, minutes, hours, day, date, month, and year, and can compensate for leap years.
It operates on a supply voltage of 2.0 to 5.5 volts and supports a temperature range of -40°C to +85°C, ensuring reliability in various environments. A 32.768 kHz crystal is required for timekeeping, which is used to generate the clock signal.
Applications include microcontrollers, wearable devices, and any system that requires timekeeping, such as data loggers and alarms. The DS1307 is known for its ease of integration and cost-effectiveness, making it a popular choice for designers looking to implement real-time clock functionality in their projects.

Features

The DS1307 is a real-time clock (RTC) chip that offers several key features:
1. Timekeeping: Maintains accurate time (hours, minutes, seconds) and date (day, month, year) with a typical accuracy of ±2 minutes per month.
2. I2C Interface: Communicates via I2C protocol, allowing easy integration with microcontrollers and other digital systems.
3. Battery Backup: Operates on a backup battery (like a CR2032) during power outages, ensuring continuous timekeeping.
4. Leap Year Compensation: Adjusts for leap years, ensuring correct date tracking.
5. Registers: Contains registers for seconds, minutes, hours, day, date, month, and year, allowing for easy access to all relevant time data.
6. 32.768 kHz Oscillator: Built-in crystal oscillator, requiring an external 32.768 kHz crystal for accurate timekeeping.
7. Square Wave Output: Provides a selectable square wave output signal for clock synchronization or timing applications.
8. Low Power Consumption: Operates with low power, making it suitable for battery-powered devices.
These features make the DS1307 a popular choice for applications requiring precise timekeeping.

Package

The DS1307+ is typically available in an 8-pin DIP (Dual In-line Package) and a 16-pin SOIC (Small Outline Integrated Circuit) package type. These packages are designed for easy integration into various electronic circuits for real-time clock applications.

Pinout

The DS1307+ is a real-time clock (RTC) IC with a total of 8 pins. Here’s a concise breakdown of its pin configuration and functions:
1. VCC (Pin 1): Supply voltage (typically 2.5V to 5.5V).
2. GND (Pin 2): Ground reference.
3. SCL (Pin 3): I2C clock line for communication.
4. SDA (Pin 4): I2C data line for communication.
5. SQW/INT (Pin 5): Square wave output or interrupt output.
6. X1 (Pin 6): Connection for the 32.768 kHz crystal oscillator.
7. X2 (Pin 7): Second connection for the crystal oscillator.
8. Vbat (Pin 8): Backup battery input for keeping time during power loss.
The DS1307+ is widely used in applications requiring accurate timekeeping, such as clocks, timers, and various embedded systems.

Manufacturer

The DS1307+ is manufactured by Maxim Integrated, which is now part of Analog Devices, Inc. Maxim Integrated was a semiconductor company that specialized in analog and mixed-signal integrated circuits. The company was known for its focus on providing innovative solutions for various applications, including power management, signal processing, and data conversion. Its products were widely used in consumer electronics, automotive, telecommunications, and industrial sectors. The DS1307 is a real-time clock (RTC) that interfaces with microcontrollers and is used for timekeeping applications. After its acquisition by Analog Devices in 2021, Maxim Integrated's extensive portfolio continues to support a diverse range of electronic designs and innovations.

Application

The DS1307+ is a real-time clock (RTC) primarily used in applications requiring accurate timekeeping. Common areas include:
1. Consumer Electronics: Clocks and timers in devices like microwaves and ovens.
2. Embedded Systems: Microcontrollers and development boards for time tracking.
3. Data Logging: Timestamping data in environmental and industrial monitoring.
4. Alarm Systems: Scheduling and triggering alarms.
5. Smart Home Devices: Coordinating time-sensitive tasks in automation systems.
Its I2C interface facilitates easy integration with various microcontrollers.

Equivalent

Equivalent products to the DS1307+ chip include the DS1302, DS3231, and MCP7940N. These chips serve similar functions as real-time clock (RTC) devices, but may differ in features such as accuracy, power consumption, and power backup capabilities. The DS3231 is known for higher accuracy due to its temperature-compensated crystal oscillator.

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