DS1307Z+T&R

Product Overview

• Category: Integrated Circuit (IC)
• Use: Real-Time Clock (RTC)
• Characteristics: Low-power, I2C interface, 56-byte non-volatile RAM
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Accurate timekeeping and date tracking in various electronic devices
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 2.0V to 5.5V
• Timekeeping Accuracy: ±2ppm at 25°C
• Operating Temperature Range: -40°C to +85°C
• I2C Bus Frequency: Up to 400kHz
• Battery Backup Input for Continuous Timekeeping
• Programmable Square Wave Output
• Automatic Power-Fail Detect and Switch Circuitry

Detailed Pin Configuration

1. VCC: Power supply voltage
2. GND: Ground reference
3. SDA: Serial Data Line for I2C communication
4. SCL: Serial Clock Line for I2C communication
5. SQW/OUT: Square wave output or interrupt output
6. RST: Reset input
7. N/C: No connection
8. VBAT: Battery backup input for continuous timekeeping

Functional Features

• Accurate timekeeping with seconds, minutes, hours, day, date, month, and year information
• Leap year compensation up to the year 2100
• 56 bytes of non-volatile RAM for user data storage
• I2C interface for easy integration with microcontrollers and other ICs
• Battery backup support ensures uninterrupted timekeeping during power loss
• Programmable square wave output for generating periodic signals
• Power-fail detection and automatic switch circuitry for seamless operation

Advantages and Disadvantages

Advantages

• Low power consumption for extended battery life
• Small form factor and easy integration into various electronic devices
• Accurate timekeeping with high precision
• User-friendly I2C interface for simplified communication
• Battery backup ensures uninterrupted operation during power outages

Disadvantages

• Limited non-volatile RAM capacity (56 bytes)
• Relatively higher cost compared to some other RTC modules
• Requires external battery for continuous timekeeping

Working Principles

The DS1307Z+T&R is based on a crystal oscillator that provides accurate timing signals. It utilizes an internal counter to keep track of time, which can be accessed and updated through the I2C interface. The IC also features a battery backup input, allowing it to continue timekeeping even when the main power supply is disconnected.

Detailed Application Field Plans

1. Consumer Electronics: Used in digital watches, alarm clocks, and home automation systems for accurate timekeeping and scheduling.
2. Industrial Automation: Integrated into programmable logic controllers (PLCs) and data loggers to timestamp events and monitor process timings.
3. Automotive: Incorporated into car dashboard displays and GPS navigation systems to provide real-time clock functionality.
4. Medical Devices: Utilized in medical equipment such as patient monitors and infusion pumps to record timestamps for critical events.
5. Communication Systems: Integrated into network switches, routers, and telecommunication equipment for synchronization and event logging.

Detailed and Complete Alternative Models

1. DS3231: Offers higher timekeeping accuracy and temperature compensation.
2. PCF8563: Provides additional features like alarm functions and timer capabilities.
3. MCP7940N: Includes a larger non-volatile RAM capacity and supports battery-backed SRAM.

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