RX-8025SA:AA0:ROHS

Product Overview

Category

The RX-8025SA:AA0:ROHS belongs to the category of Real-Time Clock (RTC) modules.

Use

This product is primarily used for timekeeping and synchronization purposes in various electronic devices.

Characteristics

• High accuracy timekeeping
• Low power consumption
• Small form factor
• Integrated crystal oscillator
• I2C interface for communication

Package

The RX-8025SA:AA0:ROHS comes in a compact surface mount package, making it suitable for space-constrained applications.

Essence

The essence of this product lies in its ability to provide accurate real-time clock functionality with minimal power consumption.

Packaging/Quantity

The RX-8025SA:AA0:ROHS is typically packaged in reels or trays, with quantities varying based on customer requirements.

Specifications

• Supply Voltage: 1.8V to 5.5V
• Timekeeping Accuracy: ±3ppm at 25°C
• Operating Temperature Range: -40°C to +85°C
• I2C Bus Interface: Supports standard and fast mode (up to 400kHz)
• Backup Power Supply: Integrated backup power switch for external battery backup

Detailed Pin Configuration

The RX-8025SA:AA0:ROHS module has the following pin configuration:

1. VCC: Power supply input
2. GND: Ground connection
3. SDA: I2C data line
4. SCL: I2C clock line
5. SQW/INT: Square wave output / Interrupt output
6. XOUT: Crystal oscillator output
7. XIN: Crystal oscillator input
8. VBAT: Backup power supply input

Functional Features

• Real-time clock with calendar functionality
• Automatic leap year compensation
• Alarm function with programmable interrupt output
• Square wave output for system clock synchronization
• Battery backup support for maintaining timekeeping during power loss

Advantages and Disadvantages

Advantages

• High accuracy timekeeping
• Low power consumption
• Compact form factor
• Integrated crystal oscillator simplifies design
• I2C interface allows easy integration into various systems

Disadvantages

• Limited temperature range (-40°C to +85°C)
• Requires an external backup power source for uninterrupted operation during power loss

Working Principles

The RX-8025SA:AA0:ROHS utilizes a highly stable crystal oscillator to generate accurate timekeeping signals. It incorporates an internal counter that keeps track of time, date, and leap years. The module communicates with the host microcontroller through the I2C bus, allowing for easy configuration and retrieval of time information.

During normal operation, the module is powered by the main supply voltage (VCC). In case of a power loss, an external backup power source connected to VBAT ensures uninterrupted timekeeping.

Detailed Application Field Plans

The RX-8025SA:AA0:ROHS finds applications in various electronic devices where accurate timekeeping is essential. Some potential application fields include:

1. Consumer Electronics: Smartphones, tablets, digital cameras, and portable media players.
2. Industrial Automation: Programmable logic controllers (PLCs), data loggers, and industrial timers.
3. Automotive: On-board computers, infotainment systems, and navigation devices.
4. Medical Devices: Patient monitoring systems, infusion pumps, and diagnostic equipment.
5. Internet of Things (IoT): Smart home automation, wearable devices, and asset tracking systems.

Detailed and Complete Alternative Models

1. DS3231: A popular RTC module with high accuracy and temperature compensation.
2. PCF8563: Low-power RTC module with I2C interface and alarm functionality.
3. MCP7940N: Real-Time Clock/Calendar with battery backup and I2C/SPI interface.

These alternative models offer similar features and can be considered as substitutes for the RX-8025SA:AA0:ROHS based on specific application requirements.

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