DS1302SN+T&R

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Real-Time Clock (RTC) Module
• Characteristics:
  • Low power consumption
  • Simple interface
  • Accurate timekeeping
  • Battery backup
• Package: SOP-8 (Small Outline Package)
• Essence: The DS1302SN+T&R is a real-time clock module that provides accurate timekeeping functionality with low power consumption and a simple interface.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 2.0V to 5.5V
• Timekeeping Current: Less than 1.0μA at 3.0V
• Operating Temperature Range: -40°C to +85°C
• Clock Accuracy: ±2 minutes per month at 25°C
• Data Retention: Over 10 years
• Serial Interface: SPI (Serial Peripheral Interface)

Detailed Pin Configuration

The DS1302SN+T&R has the following pin configuration:

| Pin Name | Description | |----------|-------------| | VCC | Power supply voltage input | | GND | Ground | | CLK | Clock signal input | | RST | Reset signal input | | DAT | Data signal input/output | | VBAT | Battery backup voltage input |

Functional Features

• Real-time clock with seconds, minutes, hours, day, date, month, and year information
• 31 bytes of general-purpose RAM for user data storage
• Programmable square wave output for various applications
• Trickle charger for battery backup
• 24-hour or 12-hour format selection

Advantages

• Low power consumption allows for extended battery life
• Simple interface facilitates easy integration into various systems
• Accurate timekeeping ensures reliable time information
• Battery backup ensures timekeeping even during power outages

Disadvantages

• Limited RAM capacity for user data storage
• Clock accuracy may slightly deviate over time and temperature variations

Working Principles

The DS1302SN+T&R utilizes an internal oscillator to keep track of time. It communicates with the microcontroller through a serial interface, allowing the transfer of time and date information. The module can be powered by a battery or an external power supply. In case of a power failure, the battery backup ensures uninterrupted timekeeping.

Detailed Application Field Plans

The DS1302SN+T&R is widely used in various applications that require accurate timekeeping, such as: 1. Digital clocks and watches 2. Timers and alarms 3. Data loggers 4. Industrial automation systems 5. Home automation systems 6. Embedded systems

Detailed and Complete Alternative Models

Some alternative models to the DS1302SN+T&R include: 1. DS3231SN+T&R: A more accurate real-time clock module with higher clock accuracy and additional features. 2. PCF8563TS/1,118: A low-power real-time clock module with I2C interface and alarm functionality. 3. MCP79410-I/SN: A feature-rich real-time clock module with battery backup and EEPROM memory.

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