DS12885TN+ - Product Overview

Basic Information

• Category: Integrated Circuit (IC)
• Use: Real-Time Clock (RTC) Module
• Characteristics:
  • Low power consumption
  • High accuracy timekeeping
  • Non-volatile memory for data storage
• Package: DIP (Dual In-line Package)
• Essence: Reliable and precise timekeeping solution
• Packaging/Quantity: Available in tubes, reels, or trays

Specifications

• Supply Voltage: 2.0V to 5.5V
• Timekeeping Accuracy: ±2 minutes per month at 25°C
• Operating Temperature Range: -40°C to +85°C
• Memory: 114 Bytes of Non-volatile RAM
• Clock Output Frequency: 32.768 kHz

Detailed Pin Configuration

The DS12885TN+ RTC module features the following pin configuration:

1. VCC - Power supply input
2. GND - Ground connection
3. X1 - Crystal oscillator input
4. X2 - Crystal oscillator output
5. RESET - Reset input
6. IRQ - Interrupt request output
7. SQW/OUT - Square wave output
8. SDA - Serial data line
9. SCL - Serial clock line
10. VBAT - Battery backup input

Functional Features

• Real-time clock with calendar functionality
• Automatic leap year compensation
• Alarm and timer functions
• Battery backup for continuous timekeeping during power loss
• I2C interface for easy integration with microcontrollers

Advantages and Disadvantages

Advantages: - Accurate timekeeping with low power consumption - Non-volatile memory ensures data retention - Wide operating temperature range for various applications

Disadvantages: - Limited non-volatile RAM capacity (114 Bytes) - Requires an external crystal oscillator for clock accuracy

Working Principles

The DS12885TN+ RTC module utilizes a crystal oscillator to generate a precise clock signal. It maintains accurate timekeeping by counting the oscillations and updating the internal registers accordingly. The non-volatile RAM allows storing critical data, such as time, date, and alarm settings, even during power loss.

Detailed Application Field Plans

The DS12885TN+ RTC module finds applications in various fields, including:

1. Embedded Systems: Used in microcontroller-based systems for time-sensitive operations, scheduling, and event logging.
2. Industrial Automation: Enables accurate timestamping of events, synchronization of processes, and time-based control systems.
3. Consumer Electronics: Integrated into devices like digital cameras, smartwatches, and home automation systems for time-related functionalities.
4. Medical Devices: Provides precise timekeeping for medical equipment, data logging, and synchronization in healthcare applications.

Detailed and Complete Alternative Models

1. DS3231 - Highly accurate RTC module with an integrated temperature-compensated crystal oscillator (TCXO).
2. PCF8563 - Low-power RTC module with I2C interface and alarm functionality.
3. MCP7940N - Real-time clock/calendar module with battery backup and I2C/SPI interfaces.

Note: This is not an exhaustive list; there are several alternative models available in the market.

This encyclopedia entry provides an overview of the DS12885TN+ RTC module, including its basic information, specifications, pin configuration, functional features, advantages, disadvantages, working principles, application field plans, and alternative models.