PCA8550PW,118

Product Overview

• Category: Integrated Circuit
• Use: Real-time Clock (RTC) with I2C Interface
• Characteristics: Low power consumption, accurate timekeeping, small package size
• Package: TSSOP-8
• Essence: Reliable real-time clock functionality for various electronic devices
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Operating Voltage: 1.3V to 5.5V
• Clock Frequency: 32.768 kHz
• I2C Bus Interface: Up to 400 kHz
• Operating Temperature Range: -40°C to +85°C
• Accuracy: ±5 ppm (at 25°C)

Detailed Pin Configuration

The PCA8550PW,118 has the following pin configuration: 1. VBAT: Backup voltage input 2. GND: Ground 3. SCL: I2C serial clock line 4. SDA: I2C serial data line 5. X1: Crystal connection 6. X2: Crystal connection 7. NC: No connect 8. VDD: Supply voltage input

Functional Features

• Real-time clock/calendar with automatic leap year compensation
• Battery backup for continuous timekeeping
• Alarm function with programmable interrupt
• 12/24-hour format selection
• Programmable square-wave output signal

Advantages and Disadvantages

Advantages

• Low power consumption extends battery life
• Accurate timekeeping ensures reliable operation
• Small package size saves board space
• I2C interface allows easy integration with microcontrollers

Disadvantages

• Limited temperature range compared to some industrial applications
• Requires an external crystal for clock accuracy

Working Principles

The PCA8550PW,118 utilizes a low-power oscillator circuit and an I2C interface to maintain accurate timekeeping. When powered by a backup battery, it continues to keep track of time even when the main power source is disconnected. The I2C interface enables communication with a microcontroller or other devices, allowing for easy configuration and synchronization.

Detailed Application Field Plans

The PCA8550PW,118 is suitable for a wide range of applications, including: - Wearable devices - IoT (Internet of Things) devices - Consumer electronics - Medical devices - Industrial automation

Detailed and Complete Alternative Models

Some alternative models to consider are: - DS3231: Another popular RTC with high accuracy and temperature compensation - MCP7940N: RTC with battery switchover and SRAM - RV-8803-C7: Ultra-low power RTC with I2C interface and timer functions

In conclusion, the PCA8550PW,118 is a versatile real-time clock integrated circuit that offers accurate timekeeping, low power consumption, and easy integration with various electronic devices.

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