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Name: DS12887A
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS12887A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Analog Devices Inc./Maxim Integrated DS12887A

Part No.:: DS12887A

Manufacturer:: Analog Devices Inc./Maxim Integrated

Package:: 24-DIP Module (0.600, 15.24mm)

Datasheet:: DS12887A.pdf

Description:: IC RTC CLK/CALENDAR PAR 24-EDIP

In Stock:: 2903

Quantity:: Add To Cart

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DS12887A Specifications

Package/Case:
24-DIP Module (0.600, 15.24mm)
Packaging:
Tube,Tube
Series:
-
ProductStatus:
Obsolete
Type:
Clock/Calendar
Features:
Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output
MemorySize:
114B
TimeFormat:
HH:MM:SS (12/24 hr)
DateFormat:
YY-MM-DD-dd
Interface:
Parallel
Voltage-Supply:
4.5V ~ 5.5V
Voltage-SupplyBattery:
2.5V ~ 4V
Current-Timekeeping(Max):
15mA @ 4.5V ~ 5.5V
OperatingTemperature:
0°C ~ 70°C
MountingType:
Through Hole

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DS12887A information

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Basic introduction and simple engineering application of DS12887A

DS12887A is a real-time clock (RTC) chip commonly used in electronic devices for timekeeping and calendar functions. It integrates a battery-backed, non-volatile RAM (NVRAM) to store critical system data, such as time, date, and configuration settings, even when the main power is off.

Application Scenario:

In DIY electronics projects, DS12887A can be utilized to add real-time clock functionality to microcontroller-based systems, enabling accurate timekeeping and scheduling capabilities.

Circuit Design:

To integrate DS12887A into a project, follow these steps:

1. Connection Setup:

Connect DS12887A to the microcontroller using the I2C or SPI communication protocol. Ensure proper wiring of the SDA (data) and SCL (clock) lines, as well as any necessary pull-up resistors.

2. Power Supply:

Provide power to DS12887A by connecting its VCC pin to a stable power source, typically +5V. Additionally, connect the GND pin to the ground reference of the system.

3. Battery Backup:

Insert a backup battery, such as a coin cell battery, into the designated battery holder of DS12887A. This ensures continuous operation and data retention during power loss.

4. Initialization:

Write initialization routines in the microcontroller firmware to configure DS12887A settings, such as time format (12-hour or 24-hour), alarm settings, and periodic interrupt intervals.

5. Timekeeping:

Implement functions to read and update time and date information from DS12887A. Utilize the RTC's registers to access seconds, minutes, hours, day, date, month, and year data.

6. Alarm Functionality:

Utilize the alarm features of DS12887A to trigger specific actions or events at predetermined times. Program the microcontroller to respond to alarm interrupts and execute corresponding tasks.

Experiment:

To understand DS12887A's functionality better, try the following experiment:

Experiment Title: Real-Time Clock Integration

Objective: To integrate DS12887A into a microcontroller-based system and implement basic timekeeping functions.

Materials:

- DS12887A RTC module

- Microcontroller development board (e.g., Arduino)

- Jumper wires

- Breadboard

- Backup battery (e.g., CR2032)

Procedure:

1. Connect the DS12887A RTC module to the microcontroller development board using jumper wires.

2. Insert the backup battery into the DS12887A module.

3. Write a simple firmware program for the microcontroller to initialize the RTC and continuously display the current time on a serial monitor or an LCD display.

4. Test the system by powering it on and verifying that the displayed time matches the real-time clock.

5. Implement additional features, such as setting alarms or updating the time/date, to further explore DS12887A's capabilities.

Conclusion:

In this experiment, you've learned how to integrate DS12887A into a microcontroller project and utilize its real-time clock functionality. By exploring different features and experimenting with various applications, you can enhance your understanding of RTCs and their practical uses in electronic projects.

DS12887A FAQ

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6. What is the process for return or replacement of DS12887A?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the DS12887A we delivered, we will accept the replacement or return of the DS12887A only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of DS12887A.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations