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DS12CR887-5+ - English Editing Encyclopedia Entry
Product Overview
Category
The DS12CR887-5+ belongs to the category of integrated circuits (ICs).
Use
This product is commonly used in electronic devices for real-time clock (RTC) applications.
Characteristics
- The DS12CR887-5+ is a low-power, high-performance RTC IC.
- It operates at a voltage range of 2.7V to 5.5V.
- This IC offers accurate timekeeping and calendar functions.
- It has a built-in power sense circuitry that detects power failures and automatically switches to backup power.
Package
The DS12CR887-5+ is available in a small outline package (SOP) with 20 pins.
Essence
The essence of this product lies in its ability to provide reliable and precise timekeeping functionality in various electronic devices.
Packaging/Quantity
The DS12CR887-5+ is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.
Specifications
- Supply Voltage: 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: 2.0V to 5.5V
- Clock Frequency: 32.768kHz
Detailed Pin Configuration
- VCC - Power supply input
- GND - Ground
- X1 - Crystal oscillator input
- X2 - Crystal oscillator output
- SQW/OUT - Square wave output
- SDA - Serial data input/output
- SCL - Serial clock input
- RST - Reset input
- VBAT - Battery backup input
- AGND - Analog ground
- AD0 - Address input 0
- AD1 - Address input 1
- AD2 - Address input 2
- AD3 - Address input 3
- AD4 - Address input 4
- AD5 - Address input 5
- AD6 - Address input 6
- AD7 - Address input 7
- VCC - Power supply input
- GND - Ground
Functional Features
- Real-time clock with calendar functionality
- Battery backup for timekeeping during power failures
- Automatic power-fail detect and switch circuitry
- Programmable square wave output
- Serial interface for communication with microcontrollers
Advantages and Disadvantages
Advantages
- Accurate timekeeping and calendar functions
- Low power consumption
- Wide operating voltage range
- Compact package size
- Easy integration with microcontrollers
Disadvantages
- Limited address inputs for certain applications
- Reliance on an external crystal oscillator for clock accuracy
Working Principles
The DS12CR887-5+ utilizes a quartz crystal oscillator to generate a precise clock signal. It incorporates internal registers to store time and date information, which can be accessed through the serial interface. During normal operation, it is powered by the main power supply. In case of a power failure, the IC automatically switches to the backup battery power, ensuring uninterrupted timekeeping.
Detailed Application Field Plans
The DS12CR887-5+ finds applications in various electronic devices that require accurate timekeeping and calendar functionality. Some common application fields include:
- Consumer Electronics: Used in digital watches, alarm clocks, and home automation systems.
- Industrial Automation: Integrated into programmable logic controllers (PLCs) and data loggers for precise time synchronization.
- Automotive: Incorporated in car dashboard clocks and vehicle tracking systems.
- Medical Devices: Utilized in medical equipment that requires accurate time stamping and scheduling.
Detailed and Complete Alternative Models
- DS3231 - A highly accurate RTC IC with an integrated temperature-compensated crystal oscillator (TCXO).
- PCF8563 - An RTC IC with a built-in timer, alarm functions, and I2C interface.
- MCP7940N - A low-power RTC IC with battery backup and I2C/SPI interfaces.
These alternative models offer similar functionalities to the DS12CR887-5+ and can be considered as alternatives based on specific application requirements.
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Énumérez 10 questions et réponses courantes liées à l'application de DS12CR887-5+ dans les solutions techniques
Sure! Here are 10 common questions and answers related to the application of DS12CR887-5+ in technical solutions:
Q: What is DS12CR887-5+? A: DS12CR887-5+ is a real-time clock (RTC) integrated circuit that provides accurate timekeeping for various technical applications.
Q: What are the key features of DS12CR887-5+? A: The key features of DS12CR887-5+ include battery backup, programmable alarms, power management, and a wide operating temperature range.
Q: How does DS12CR887-5+ ensure accurate timekeeping? A: DS12CR887-5+ uses an internal oscillator and a crystal to maintain accurate timekeeping, even in the absence of power.
Q: Can DS12CR887-5+ be used in battery-powered devices? A: Yes, DS12CR887-5+ has low power consumption and can be used in battery-powered devices to provide continuous timekeeping.
Q: What is the purpose of the battery backup in DS12CR887-5+? A: The battery backup ensures that the RTC continues to keep track of time, even when the main power source is disconnected or unavailable.
Q: How many alarms can be programmed in DS12CR887-5+? A: DS12CR887-5+ supports two programmable alarms, which can be set to trigger at specific times or intervals.
Q: Can DS12CR887-5+ be interfaced with microcontrollers or other digital systems? A: Yes, DS12CR887-5+ has a serial interface (SPI/I2C) that allows easy integration with microcontrollers and other digital systems.
Q: What is the operating temperature range of DS12CR887-5+? A: DS12CR887-5+ has an extended operating temperature range of -40°C to +85°C, making it suitable for various industrial and automotive applications.
Q: Can DS12CR887-5+ be used in time-sensitive applications like data logging or event scheduling? A: Yes, DS12CR887-5+ provides accurate timekeeping and can be used in time-sensitive applications that require precise timing and scheduling.
Q: Are there any application-specific considerations when using DS12CR887-5+? A: Depending on the specific application, considerations such as power supply voltage, crystal selection, and PCB layout may need to be taken into account for optimal performance.
Please note that these questions and answers are general and may vary based on specific requirements and use cases.