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Name: DS14285Q
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS14285Q
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 DS14285Q

Part No.:: DS14285Q

Manufacturer:: Analog Devices Inc./Maxim Integrated

Package:: 28-LCC (J-Lead)

Datasheet:: DS14285Q.pdf

Description:: IC RTC CLK/CALENDAR PAR 28-PLCC

In Stock:: 2122

Quantity:: Add To Cart

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DS14285Q Specifications

Package/Case:
28-LCC (J-Lead)
Packaging:
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 ~ 3.6V
Current-Timekeeping(Max):
0.5µA @ 4.5V ~ 5.5V
OperatingTemperature:
0°C ~ 70°C
MountingType:
Surface Mount

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DS14285Q information

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Basic introduction and simple engineering application of DS14285Q

DS14285Q is a real-time clock (RTC) chip manufactured by Maxim Integrated, offering accurate timekeeping and versatile functionality for various applications. It features an integrated temperature-compensated crystal oscillator (TCXO) and a non-volatile RAM (NVRAM) for storing time and configuration data.

Application Scenario:

In electronic projects requiring precise timekeeping, such as data logging systems or IoT devices, DS14285Q can be utilized to timestamp events or synchronize actions based on real-world time.

Circuit Design:

To incorporate DS14285Q into a project, follow these steps:

1. Connection Setup:

Connect DS14285Q to the microcontroller or single-board computer (SBC) using the Inter-Integrated Circuit (I2C) or Serial Peripheral Interface (SPI) protocol. Ensure proper pull-up resistors are connected to the SDA and SCL lines for reliable communication.

2. Power Supply:

Provide a stable power supply voltage within the specified range (typically 1.8V to 5.5V) to DS14285Q VCC pin. Utilize decoupling capacitors near the power supply pins to minimize voltage fluctuations and ensure proper operation.

3. Crystal Connection:

Connect an external crystal oscillator (typically 32.768 kHz) to DS14285Q XTAL1 and XTAL2 pins to enable accurate timekeeping. Ensure the crystal's load capacitance matches the specifications mentioned in the datasheet.

4. Backup Battery:

Install a backup battery, such as a coin cell battery, to provide power to the DS14285Q's NVRAM when the main power source is unavailable. Connect the battery to the VBAT pin and ensure proper polarity.

5. Initialization:

Write initialization code in the firmware to configure DS14285Q settings, such as time format (12-hour or 24-hour), alarm settings, and interrupt configurations. Use the appropriate communication protocol to send commands and data to the RTC chip.

Experiment:

Let's create a simple project to demonstrate DS14285Q's timekeeping capabilities. We'll use an Arduino microcontroller and an LCD display to show the current time.

Experiment Setup:

1. Connect DS14285Q to Arduino using the I2C interface. Connect SDA to Arduino's A4 pin and SCL to A5 pin. Ensure proper pull-up resistors (typically 4.7kΩ) are connected to SDA and SCL.

2. Connect an external 32.768 kHz crystal oscillator to DS14285Q's XTAL1 and XTAL2 pins.

3. Install a CR2032 coin cell battery to provide backup power to DS14285Q's NVRAM. Connect the positive terminal to VBAT and the negative terminal to GND.

4. Connect an LCD display to Arduino to visualize the time. Utilize Arduino's LiquidCrystal library to interface with the display.

Experiment Procedure:

1. Write Arduino code to initialize DS14285Q and configure it to output the current time.

2. Implement a loop to continuously read the time from DS14285Q and display it on the LCD.

3. Upload the code to Arduino and observe the LCD display. It should show the current time obtained from DS14285Q.

Conclusion:

In this experiment, we've successfully demonstrated how to integrate DS14285Q into a project and utilize its timekeeping capabilities. With accurate timekeeping and reliable performance, DS14285Q can be a valuable component in various electronic applications requiring precise timing functionality.

DS14285Q FAQ

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6. What is the process for return or replacement of DS14285Q?

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 DS14285Q we delivered, we will accept the replacement or return of the DS14285Q 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 DS14285Q.

(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