MAX690AESA/GG8

Product Overview

• Category: Integrated Circuit (IC)
• Use: Real-Time Clock (RTC) with Battery Backup
• Characteristics:
  • Low-power consumption
  • Wide operating voltage range
  • Automatic switchover and battery backup
  • Programmable alarm and timer functions
• Package: 8-pin small outline integrated circuit (SOIC)
• Essence: Provides accurate timekeeping and timing functions in electronic devices
• Packaging/Quantity: Tape and reel packaging, 2500 units per reel

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Timekeeping Accuracy: ±2 minutes per month at 25°C
• Battery Backup Voltage Range: 1.3V to 5.5V
• Alarm Output: Active-high or active-low
• Timer Functions: Programmable countdown timer and periodic timer

Pin Configuration

The MAX690AESA/GG8 IC has the following pin configuration:

```

---

| | --| VCC GND |-- Pin 1: Power supply pins --| CLK RST |-- Pin 2: Clock input and reset pin --| INT OUT |-- Pin 3: Interrupt output and alarm output --| SQW VBAT|-- Pin 4: Square wave output and battery backup input |___________| ```

Functional Features

• Real-time clock with battery backup
• Automatic switchover between power supply and battery backup
• Programmable alarm and timer functions
• Square wave output for timekeeping synchronization
• Low-power consumption for extended battery life

Advantages and Disadvantages

Advantages: - Accurate timekeeping and timing functions - Wide operating voltage range - Low-power consumption - Programmable alarm and timer functions

Disadvantages: - Timekeeping accuracy may decrease at extreme temperatures - Limited number of pins for additional functionalities

Working Principles

The MAX690AESA/GG8 is a real-time clock IC that utilizes an external crystal oscillator to keep track of time. It operates on a power supply voltage between 2.7V and 5.5V. When the power supply is available, the IC uses it as the primary power source. In case of a power failure, the IC automatically switches to the battery backup voltage.

The IC includes a built-in oscillator circuit that generates accurate clock signals based on the external crystal oscillator. It also provides programmable alarm and timer functions, allowing users to set specific time intervals or trigger events at predefined times.

Detailed Application Field Plans

The MAX690AESA/GG8 IC finds applications in various electronic devices that require accurate timekeeping and timing functions. Some potential application fields include:

1. Consumer Electronics: Used in digital clocks, watches, and timers.
2. Industrial Automation: Integrated into control systems for precise scheduling and synchronization.
3. Automotive: Incorporated in car dashboard clocks and event-triggered systems.
4. Medical Devices: Utilized in medical equipment for time-sensitive operations and data logging.
5. Communication Systems: Integrated into network devices for accurate time synchronization.

Detailed and Complete Alternative Models

1. DS1307 - Real-Time Clock IC with I2C interface
2. PCF8563 - Real-Time Clock IC with alarm and timer functions
3. DS3231 - Highly accurate Real-Time Clock IC with temperature compensation

These alternative models offer similar functionality to the MAX690AESA/GG8 and can be considered as alternatives based on specific requirements.

Word count: 410 words