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BQ4845YP-A4
Product Category: Integrated Circuit (IC)
Basic Information Overview: - Category: Real-Time Clock (RTC) IC - Use: The BQ4845YP-A4 is used to keep track of time and date in electronic systems, providing accurate timekeeping functionality. - Characteristics: Low power consumption, high accuracy, small form factor - Package: 8-pin SOIC (Small Outline Integrated Circuit) - Essence: Timekeeping and timestamping in electronic devices - Packaging/Quantity: Typically supplied in reels of 250 or 300 units
Specifications: - Operating Voltage: 2.7V to 5.5V - Timekeeping Accuracy: ±1 minute per month at 25°C - Operating Temperature Range: -40°C to +85°C - Clock Output: Square wave output with frequency programmable from 32.768kHz to 1Hz
Detailed Pin Configuration: - Pin 1: VBAT (Backup Battery Input) - Pin 2: GND (Ground) - Pin 3: SCL (Serial Clock Input/Output) - Pin 4: SDA (Serial Data Input/Output) - Pin 5: INT (Interrupt Output) - Pin 6: VCC (Power Supply Input) - Pin 7: X1 (Crystal Connection) - Pin 8: X2 (Crystal Connection)
Functional Features: - Battery backup for continuous timekeeping - I2C interface for communication with microcontrollers - Programmable square wave output - Alarm function for specific time events
Advantages: - Low power consumption extends battery life - High timekeeping accuracy - Small package size for space-constrained designs
Disadvantages: - Limited clock output frequency options - External crystal required for operation
Working Principles: The BQ4845YP-A4 utilizes an internal oscillator and a connected external crystal to generate accurate timekeeping signals. It communicates with the host system through the I2C interface, allowing for configuration and retrieval of time and date information.
Detailed Application Field Plans: - Embedded systems requiring precise timekeeping - Consumer electronics such as digital clocks and appliances - Industrial automation and control systems - Automotive applications for event logging and scheduling
Detailed and Complete Alternative Models: - DS3231: Offers higher timekeeping accuracy and temperature compensation - PCF85263A: Provides additional features such as tamper detection and timestamping
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What is the operating voltage range of BQ4845YP-A4?
- The operating voltage range of BQ4845YP-A4 is 2.7V to 5.5V.
What is the typical accuracy of BQ4845YP-A4's real-time clock (RTC)?
- The typical accuracy of the real-time clock in BQ4845YP-A4 is ±3 minutes per year.
Can BQ4845YP-A4 operate in extended temperature ranges?
- Yes, BQ4845YP-A4 can operate in extended temperature ranges from -40°C to 85°C.
Does BQ4845YP-A4 support battery backup for the RTC?
- Yes, BQ4845YP-A4 has a built-in power-fail detect circuit and supports battery backup for the RTC.
What communication interfaces does BQ4845YP-A4 support?
- BQ4845YP-A4 supports I2C and SMBus communication interfaces.
Is BQ4845YP-A4 suitable for portable or battery-powered applications?
- Yes, BQ4845YP-A4 is suitable for portable or battery-powered applications due to its low power consumption.
Can BQ4845YP-A4 be used in automotive applications?
- Yes, BQ4845YP-A4 is AEC-Q100 qualified and suitable for automotive applications.
What is the package type of BQ4845YP-A4?
- BQ4845YP-A4 is available in a small 8-pin SOIC package.
Does BQ4845YP-A4 have programmable alarm functions?
- Yes, BQ4845YP-A4 features programmable alarm functions for time-based alerts.
Is BQ4845YP-A4 compatible with popular microcontrollers and processors?
- Yes, BQ4845YP-A4 is compatible with a wide range of microcontrollers and processors, making it versatile for various technical solutions.