DS1831AS/T&R

Product Overview

• Category: Integrated Circuit
• Use: Real-Time Clock (RTC) with Alarm
• Characteristics: Low power consumption, high accuracy, compact design
• Package: Surface Mount, 8-TSSOP
• Essence: Provides accurate timekeeping and alarm functionality
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Operating Voltage: 2.7V to 5.5V
• Timekeeping Current: 400nA at 3.3V
• Alarm Current: 600nA at 3.3V
• Accuracy: ±2 minutes per month at 25°C
• Temperature Range: -40°C to +85°C
• I2C Interface

Detailed Pin Configuration

1. VCC
2. SDA
3. SCL
4. INT/SQW
5. GND
6. NC
7. NC
8. RST

Functional Features

• Real-time clock with calendar
• Two programmable time-of-day alarms
• Automatic power-fail detect and switch circuitry
• Power-on reset and watchdog timer
• I2C serial interface

Advantages and Disadvantages

Advantages

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

Disadvantages

• Limited number of alarms
• Requires external crystal for timekeeping

Working Principles

The DS1831AS/T&R operates as a real-time clock by keeping track of time and date information. It utilizes an internal oscillator and a backup battery to maintain accurate timekeeping even during power interruptions. The device also features alarm functionality, allowing users to set up to two programmable alarms.

Detailed Application Field Plans

The DS1831AS/T&R is suitable for various applications requiring precise timekeeping and alarm functions. Some potential application fields include: - Embedded systems - Consumer electronics - Industrial automation - Medical devices

Detailed and Complete Alternative Models

• DS3231: Offers higher accuracy and temperature compensation
• PCF8563: Low-power RTC with I2C-bus interface
• MCP79410: Battery-backed real-time clock/calendar with SRAM

In conclusion, the DS1831AS/T&R is a versatile integrated circuit that provides reliable real-time clock and alarm capabilities in a compact package. Its low power consumption and wide operating voltage range make it suitable for a wide range of applications.

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