Meixin Integrated
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MAX690SCSA-T
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MAX690SCSA-T

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Real-Time Clock (RTC) with Battery Backup
  • Characteristics: Low-power, precision timing, battery backup, small form factor
  • Package: 8-pin Small Outline Integrated Circuit (SOIC)
  • Essence: Provides accurate timekeeping and calendar functions in various applications
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage: 2.7V to 5.5V
  • Timekeeping Current: 400nA (typical)
  • Operating Temperature Range: -40°C to +85°C
  • Accuracy: ±2 minutes per month at 25°C
  • Battery Backup Voltage: 1.3V to 5.5V

Pin Configuration

The MAX690SCSA-T has the following pin configuration:

  1. VBAT - Battery Backup Input
  2. GND - Ground
  3. SQW/OUT - Square Wave Output or Alarm Output
  4. RST - Active-Low Reset Output
  5. XTAL1 - Crystal Oscillator Input
  6. XTAL2 - Crystal Oscillator Output
  7. VCC - Positive Power Supply
  8. NC - No Connection

Functional Features

  • Real-time clock with battery backup for accurate timekeeping even during power loss
  • Programmable alarm and square wave output
  • Automatic leap year compensation
  • Power-fail detection and reset output
  • Low-power consumption for extended battery life

Advantages and Disadvantages

Advantages

  • High accuracy in timekeeping
  • Small form factor suitable for space-constrained applications
  • Wide operating voltage range allows flexibility in power supply selection
  • Low power consumption extends battery life
  • Easy integration into various electronic systems

Disadvantages

  • Limited functionality compared to more advanced RTCs
  • Relatively higher cost compared to basic timekeeping solutions

Working Principles

The MAX690SCSA-T utilizes an external crystal oscillator to generate accurate timing signals. It operates on a low-power mode when the main power supply is available and switches to battery backup mode during power loss. The integrated circuit maintains timekeeping accuracy by compensating for leap years and provides various features like alarm output and power-fail detection.

Detailed Application Field Plans

The MAX690SCSA-T is widely used in applications that require precise timekeeping, such as:

  1. Embedded systems
  2. Industrial automation
  3. Medical devices
  4. Data loggers
  5. Security systems
  6. Automotive electronics
  7. Consumer electronics

Detailed and Complete Alternative Models

  1. DS1307 - Real-Time Clock IC with I2C interface
  2. PCF8563 - Real-Time Clock and Calendar IC with I2C-bus interface
  3. MCP7940N - Real-Time Clock/Calendar with EEPROM and I2C interface
  4. DS3231 - Extremely Accurate I2C-Integrated RTC/TCXO/Crystal

These alternative models offer similar functionalities and can be considered based on specific application requirements.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van MAX690SCSA-T in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of MAX690SCSA-T in technical solutions:

  1. Q: What is the MAX690SCSA-T? A: The MAX690SCSA-T is a microprocessor supervisory circuit that monitors the power supply voltage of a system and provides reset signals to the microcontroller or other digital ICs.

  2. Q: What is the purpose of using the MAX690SCSA-T in a technical solution? A: The MAX690SCSA-T ensures reliable operation by monitoring the power supply voltage and generating a reset signal when it falls below a specified threshold, preventing erratic behavior or data corruption.

  3. Q: How does the MAX690SCSA-T detect low voltage conditions? A: The MAX690SCSA-T uses an internal voltage reference and comparator to monitor the power supply voltage. When the voltage drops below a set threshold, it triggers the reset output.

  4. Q: Can the MAX690SCSA-T be used with different power supply voltages? A: Yes, the MAX690SCSA-T can be used with a wide range of power supply voltages, typically from 1.2V to 5.5V.

  5. Q: Is the MAX690SCSA-T suitable for battery-powered applications? A: Yes, the MAX690SCSA-T is commonly used in battery-powered applications as it helps prevent damage to the system when the battery voltage drops too low.

  6. Q: Can the MAX690SCSA-T be used with different microcontrollers or digital ICs? A: Yes, the MAX690SCSA-T is compatible with a wide range of microcontrollers and digital ICs, making it versatile for various technical solutions.

  7. Q: Does the MAX690SCSA-T have any adjustable parameters? A: Yes, the MAX690SCSA-T has an adjustable reset threshold voltage that can be set using external resistors.

  8. Q: Can the MAX690SCSA-T generate a power-on reset signal? A: Yes, the MAX690SCSA-T generates a power-on reset signal when the power supply voltage rises above the reset threshold, ensuring a controlled startup of the system.

  9. Q: Does the MAX690SCSA-T have any additional features? A: Yes, the MAX690SCSA-T includes a manual reset input and a watchdog timer function for added system reliability.

  10. Q: Is the MAX690SCSA-T available in different package options? A: Yes, the MAX690SCSA-T is available in a small surface-mount SOIC package, making it suitable for space-constrained applications.

Please note that these answers are general and may vary depending on the specific application and requirements.