DS3231SN#T&R

Product Overview

• Category: Integrated Circuit (IC)
• Use: Real-Time Clock (RTC) Module
• Characteristics:
  • High accuracy timekeeping
  • Low power consumption
  • I2C interface for communication
  • Temperature-compensated crystal oscillator (TCXO)
• Package: Surface Mount Technology (SMT)
• Essence: Accurate and reliable real-time clock module
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 2.3V to 5.5V
• Timekeeping Accuracy: ±2ppm (±0.1728 seconds/day)
• Operating Temperature Range: -40°C to +85°C
• I2C Bus Frequency: Up to 400kHz
• Battery Backup Input for Continuous Timekeeping
• Alarm Function with Interrupt Output
• Programmable Square Wave Output
• 16 Bytes of Non-volatile Memory for User Data Storage

Detailed Pin Configuration

The DS3231SN#T&R has a total of 16 pins. The pin configuration is as follows:

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/INT - Square Wave Output / Interrupt Output
6. RST - Reset input
7. N/C - No Connection
8. N/C - No Connection
9. N/C - No Connection
10. N/C - No Connection
11. N/C - No Connection
12. N/C - No Connection
13. N/C - No Connection
14. N/C - No Connection
15. N/C - No Connection
16. N/C - No Connection

Functional Features

• Accurate timekeeping with ±2ppm accuracy
• Battery backup ensures continuous timekeeping during power loss
• Alarm function with interrupt output for event triggering
• Programmable square wave output for various applications
• Non-volatile memory for user data storage

Advantages and Disadvantages

Advantages

• High accuracy timekeeping
• Low power consumption
• Wide operating temperature range
• Easy integration with I2C interface
• Battery backup for uninterrupted timekeeping

Disadvantages

• Limited non-volatile memory capacity (16 bytes)
• No built-in temperature sensor

Working Principles

The DS3231SN#T&R utilizes a temperature-compensated crystal oscillator (TCXO) to maintain accurate timekeeping. It communicates with the host microcontroller through the I2C bus, allowing for easy integration into various systems. The module can be powered by a supply voltage between 2.3V and 5.5V, and it also features a battery backup input to ensure continuous timekeeping during power interruptions.

Detailed Application Field Plans

The DS3231SN#T&R is widely used in applications that require precise timekeeping, such as:

1. Real-time clocks in embedded systems
2. Data loggers and time-stamping devices
3. Industrial automation and control systems
4. Medical equipment with time-sensitive operations
5. Smart home automation systems
6. Automotive electronics for accurate time synchronization

Detailed and Complete Alternative Models

1. DS1307 - Basic real-time clock module with lower accuracy
2. PCF8563 - Real-time clock module with integrated temperature sensor
3. DS3234 - High-precision real-time clock module with extended temperature range
4. MCP7940N - Real-time clock module with battery switchover circuitry

These alternative models offer different features and specifications, allowing users to choose the most suitable option for their specific requirements.

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