DS1284Q+T&R

Product Overview

Category

The DS1284Q+T&R belongs to the category of integrated circuits (ICs).

Use

This product is primarily used for real-time clock (RTC) applications.

Characteristics

• Low power consumption
• High accuracy
• Small form factor
• Wide operating temperature range

Package

The DS1284Q+T&R is available in a small outline package (SOP) format.

Essence

The essence of the DS1284Q+T&R lies in its ability to accurately keep track of time and date information in various electronic devices.

Packaging/Quantity

This product is typically packaged in reels and comes in quantities of 2500 units per reel.

Specifications

• Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Timekeeping Accuracy: ±2 minutes per month
• Battery Backup Voltage: 2.0V to 5.5V
• Clock Frequency: 32.768kHz

Detailed Pin Configuration

The DS1284Q+T&R has the following pin configuration:

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

Functional Features

• Real-time clock with calendar functionality
• Alarm and timer functions
• Non-volatile storage for time and date information
• Automatic leap year compensation
• Power-fail detection and switch circuitry

Advantages and Disadvantages

Advantages

• Accurate timekeeping
• Low power consumption
• Compact size
• Wide operating temperature range

Disadvantages

• Limited storage capacity for additional data
• Reliance on external crystal oscillator for clock accuracy

Working Principles

The DS1284Q+T&R utilizes a combination of an internal quartz crystal oscillator and battery backup to maintain accurate timekeeping even during power interruptions. The crystal oscillator generates a precise clock signal, which is used to increment the internal counters responsible for tracking time and date information. In the event of a power failure, the battery backup ensures that the RTC continues to operate and retain its stored data.

Detailed Application Field Plans

The DS1284Q+T&R finds applications in various electronic devices that require accurate timekeeping and calendar functionality. Some potential application fields include:

1. Consumer electronics: Digital watches, clocks, and timers.
2. Industrial automation: Programmable logic controllers (PLCs), data loggers, and time-sensitive control systems.
3. Automotive: On-board computers, dashboard displays, and navigation systems.
4. Medical devices: Patient monitoring systems, infusion pumps, and diagnostic equipment.
5. Communication systems: Network switches, routers, and base stations.

Detailed and Complete Alternative Models

1. DS3231 - Real-time clock module with higher timekeeping accuracy and additional features.
2. PCF8563 - Low-power real-time clock IC with integrated alarm and timer functions.
3. MCP7940N - I2C real-time clock/calendar IC with battery backup and power-fail detection.

These alternative models offer similar functionality to the DS1284Q+T&R and can be considered as alternatives based on specific requirements and preferences.

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