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Name: DS1644-120+
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS1644-120+
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 DS1644-120+

Part No.:: DS1644-120+

Manufacturer:: Analog Devices Inc./Maxim Integrated

Package:: 28-DIP Module (0.600, 15.24mm)

Datasheet:: DS1644-120+.pdf

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

In Stock:: 3137

Quantity:: Add To Cart

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DS1644-120+ Specifications

Package/Case:
28-DIP Module (0.600, 15.24mm)
Packaging:
Tube
Series:
-
ProductStatus:
Obsolete
Type:
Clock/Calendar
Features:
Leap Year, NVSRAM
MemorySize:
32KB
TimeFormat:
HH:MM:SS (24 hr)
DateFormat:
YY-MM-DD-dd
Interface:
Parallel
Voltage-Supply:
4.5V ~ 5.5V
Voltage-SupplyBattery:
-
Current-Timekeeping(Max):
4mA @ 4.5V ~ 5.5V
OperatingTemperature:
0°C ~ 70°C
MountingType:
Through Hole

DS1644-120+ this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including DS1644-120+ price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for DS1644-120+ to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

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DS1644-120+ information

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Basic introduction and simple engineering application of DS1644-120+

DS1644-120+ is a temperature-compensated real-time clock (RTC) with a built-in 8k x 8 non-volatile static RAM (NV SRAM). It offers precise timekeeping and storage capabilities, making it suitable for applications requiring accurate timekeeping and event logging.

Application Scenario:

In a data logging project, DS1644-120+ can be utilized to timestamp and store sensor data at regular intervals, enabling analysis and monitoring of environmental conditions over time.

Circuit Setup:

To incorporate DS1644-120+ into a data logging system, follow these steps:

1. Interfacing:

Connect DS1644-120+ to the microcontroller or single-board computer using the I2C or SPI interface. Ensure proper wiring and configure the communication protocol according to the device datasheet.

2. Power Supply:

Provide the required power supply voltage (typically 5V) to DS1644-120+ VCC pin. Use decoupling capacitors to stabilize the power lines and minimize noise.

3. Crystal Oscillator:

Connect an external crystal oscillator to DS1644-120+ XTAL1 and XTAL2 pins for accurate clock generation. Choose a crystal with the appropriate frequency (typically 32.768 kHz) for RTC operation.

4. Backup Battery:

Install a backup battery, such as a coin cell battery, to ensure continuous timekeeping and data retention during power loss. Connect the battery to the VBAT pin of DS1644-120+.

5. Sensor Integration:

Interface environmental sensors, such as temperature or humidity sensors, to the microcontroller or single-board computer. Use analog or digital sensor interfaces compatible with the chosen platform.

Experiment:

To create a simple data logging project using DS1644-120+, follow these experimental steps:

Step 1: Hardware Setup

Connect DS1644-120+ to an Arduino board via the I2C interface. Wire the SDA pin to A4 and SCL pin to A5 on the Arduino Uno.

Step 2: Software Configuration

Download and install the Arduino IDE if not already installed. Open the IDE, navigate to "Sketch" > "Include Library" > "Manage Libraries...", and search for the DS1307RTC library. Install the library.

Step 3: Coding

Write a simple Arduino sketch to initialize the RTC, read sensor data, and log timestamps along with sensor readings to the serial monitor or an SD card.

Step 4: Testing

Upload the sketch to the Arduino board and observe the serial monitor output or check the saved data on the SD card to verify proper operation. Ensure that the timestamps correspond to the real-time clock readings.

Considerations:

When implementing the data logging project, consider the following:

- Data Storage Capacity: Check the available NV SRAM size of DS1644-120+ to ensure it can accommodate the desired amount of logged data.

- Power Consumption: Optimize power management to prolong battery life and minimize energy consumption, especially in battery-powered applications.

- Data Integrity: Implement error-checking mechanisms and backup strategies to prevent data loss or corruption in case of unexpected power interruptions or system failures.

- Sensor Calibration: Calibrate sensors periodically to maintain measurement accuracy and reliability over time, especially in critical applications.

- Real-Time Clock Accuracy: Periodically synchronize the RTC with an external time reference, such as GPS or NTP servers, to compensate for clock drift and maintain accurate timekeeping.

DS1644-120+ FAQ

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6. What is the process for return or replacement of DS1644-120+?

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 DS1644-120+ we delivered, we will accept the replacement or return of the DS1644-120+ 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 DS1644-120+.

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

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(1)Inform us within 90 days

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