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BQ3285P-SB2E3
Product Overview
Category
The BQ3285P-SB2E3 belongs to the category of real-time clock (RTC) integrated circuits.
Use
This product is primarily used for timekeeping and calendar functions in various electronic devices.
Characteristics
- Low power consumption
- High accuracy
- Integrated oscillator circuit
- Non-volatile memory for data storage
- Serial interface for communication with the host device
Package
The BQ3285P-SB2E3 is available in a small surface-mount package, making it suitable for compact electronic devices.
Essence
The essence of the BQ3285P-SB2E3 lies in its ability to provide accurate timekeeping and calendar functionality while consuming minimal power.
Packaging/Quantity
This product is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.
Specifications
- Supply voltage: 1.8V to 5.5V
- Timekeeping accuracy: ±2 minutes per month
- Operating temperature range: -40°C to +85°C
- Serial interface: I2C-compatible
Detailed Pin Configuration
The BQ3285P-SB2E3 has the following pin configuration:
- VCC - Power supply input
- GND - Ground
- SDA - Serial data line
- SCL - Serial clock line
- SQW/INT - Square wave output/interrupt output
- X1 - Crystal oscillator input
- X2 - Crystal oscillator output
- VBAT - Backup battery input
Functional Features
- Real-time clock with calendar functions
- Automatic leap year compensation
- Alarm function with programmable interrupt output
- Battery backup for timekeeping during power loss
- Oscillator fail detection and correction
Advantages and Disadvantages
Advantages
- Low power consumption extends battery life
- High accuracy ensures precise timekeeping
- Compact package size allows for integration in small devices
- Versatile serial interface simplifies communication with host device
Disadvantages
- Limited timekeeping accuracy compared to more advanced RTCs
- Lack of additional features found in higher-end models
Working Principles
The BQ3285P-SB2E3 utilizes an integrated oscillator circuit and a quartz crystal to generate accurate timekeeping signals. It maintains the current time and date information in non-volatile memory, which is powered by a backup battery during power loss.
Detailed Application Field Plans
The BQ3285P-SB2E3 is commonly used in various electronic devices that require real-time clock functionality, such as:
- Consumer electronics (e.g., digital cameras, portable media players)
- Home appliances (e.g., microwave ovens, washing machines)
- Automotive systems (e.g., car audio systems, dashboard displays)
- Industrial equipment (e.g., programmable logic controllers, data loggers)
Detailed and Complete Alternative Models
- DS3231 - Real-time clock module with higher timekeeping accuracy and additional features.
- PCF8563 - Low-power real-time clock IC with I2C interface.
- MCP7940N - Real-time clock/calendar IC with battery backup and alarm functions.
These alternative models offer different specifications and features, providing options based on specific application requirements.
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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací BQ3285P-SB2E3 v technických řešeních
Sure! Here are 10 common questions and answers related to the application of BQ3285P-SB2E3 in technical solutions:
1. What is the BQ3285P-SB2E3? The BQ3285P-SB2E3 is a real-time clock (RTC) and calendar device with an integrated temperature-compensated crystal oscillator (TCXO).
2. What is the purpose of the BQ3285P-SB2E3? The BQ3285P-SB2E3 is used to keep track of time and date in various electronic systems, such as industrial automation, consumer electronics, and automotive applications.
3. How does the BQ3285P-SB2E3 maintain accurate timekeeping? The BQ3285P-SB2E3 uses a TCXO to compensate for temperature variations that can affect the accuracy of the clock. It also has a backup battery to ensure timekeeping during power outages.
4. Can the BQ3285P-SB2E3 be used in battery-powered devices? Yes, the BQ3285P-SB2E3 is designed to operate with a wide range of supply voltages, including those found in battery-powered devices.
5. What communication interface does the BQ3285P-SB2E3 support? The BQ3285P-SB2E3 supports I2C (Inter-Integrated Circuit) communication interface, making it easy to integrate into existing systems.
6. Can the BQ3285P-SB2E3 generate alarms or interrupts? Yes, the BQ3285P-SB2E3 has programmable alarm functions that can trigger interrupts or set output pins to alert the system when specific time conditions are met.
7. Does the BQ3285P-SB2E3 have non-volatile memory? Yes, the BQ3285P-SB2E3 has 236 bytes of non-volatile RAM (NVRAM) that can be used to store system-specific data or user preferences.
8. What is the operating temperature range of the BQ3285P-SB2E3? The BQ3285P-SB2E3 has an operating temperature range of -40°C to +85°C, making it suitable for use in various environments.
9. Can the BQ3285P-SB2E3 be used as a standalone clock without a microcontroller? Yes, the BQ3285P-SB2E3 can operate independently as a standalone clock, but it can also be easily interfaced with a microcontroller for additional functionality.
10. Is the BQ3285P-SB2E3 RoHS compliant? Yes, the BQ3285P-SB2E3 is RoHS (Restriction of Hazardous Substances) compliant, ensuring it meets environmental standards for hazardous substances.
Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.