MCP795B21T-I/SL

Product Overview

Category

The MCP795B21T-I/SL belongs to the category of Real-Time Clocks (RTCs).

Use

This product is primarily used for timekeeping and synchronization purposes in various electronic devices.

Characteristics

• High accuracy timekeeping
• Low power consumption
• Small form factor
• Integrated oscillator circuitry
• Non-volatile memory for data storage
• I2C interface for communication

Package

The MCP795B21T-I/SL comes in a small outline integrated circuit (SOIC) package.

Essence

The essence of this product lies in its ability to accurately keep track of time and provide synchronization capabilities to electronic systems.

Packaging/Quantity

The MCP795B21T-I/SL is typically packaged in reels, with 250 units per reel.

Specifications

• Supply Voltage: 1.8V to 5.5V
• Timekeeping Accuracy: ±2 minutes per month
• Operating Temperature Range: -40°C to +85°C
• I2C Bus Frequency: Up to 400 kHz
• Memory Size: 64 bytes of non-volatile EEPROM

Detailed Pin Configuration

The MCP795B21T-I/SL has a total of 8 pins, which are as follows:

1. VDD - Power supply voltage input
2. SDA - Serial data line for I2C communication
3. SCL - Serial clock line for I2C communication
4. VSS - Ground reference
5. SQW/INT - Square wave output or interrupt pin
6. VBAT - Backup battery input for maintaining timekeeping during power loss
7. XOUT - Crystal oscillator output
8. XIN - Crystal oscillator input

Functional Features

• Real-time clock with calendar functionality
• Alarm and timer functions
• Power-fail timestamp and battery switchover support
• Programmable square wave output
• 64 bytes of non-volatile memory for data storage
• Automatic leap year compensation

Advantages and Disadvantages

Advantages

• High accuracy timekeeping
• Low power consumption
• Small form factor
• Integrated oscillator circuitry simplifies design
• Non-volatile memory ensures data retention during power loss

Disadvantages

• Limited memory size (64 bytes)
• Requires an external crystal oscillator for operation

Working Principles

The MCP795B21T-I/SL utilizes an integrated oscillator circuit to generate accurate clock signals. It communicates with the host system through the I2C interface, allowing for easy integration into various electronic devices. The non-volatile memory ensures that timekeeping data is retained even in the event of a power loss.

Detailed Application Field Plans

The MCP795B21T-I/SL finds applications in a wide range of electronic systems, including but not limited to: - Consumer electronics - Industrial automation - Medical devices - Automotive systems - Smart home appliances

Detailed and Complete Alternative Models

Some alternative models to the MCP795B21T-I/SL include: - DS3231 - Real-Time Clock Module - PCF8563 - I2C Real-Time Clock - RV-8803-C7 - Ultra-Low Power RTC

These alternative models offer similar functionality and can be considered as substitutes depending on specific requirements.

In conclusion, the MCP795B21T-I/SL is a highly accurate real-time clock with various features and advantages. Its small form factor and low power consumption make it suitable for a wide range of applications. However, its limited memory size and requirement for an external crystal oscillator should be taken into consideration when selecting this product.