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Name: DS3234S#T&R
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS3234S#T&R
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 DS3234S#T&R

Part No.:: DS3234S#T&R

Manufacturer:: Analog Devices Inc./Maxim Integrated

Package:: 20-SOIC (0.295, 7.50mm Width)

Datasheet:: DS3234S#T&R.pdf

Description:: IC RTC CLK/CALENDAR SPI 20-SOIC

In Stock:: 3998

Quantity:: Add To Cart

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DS3234S#T&R Typical application Circuitry

DS3234S T R

The DS3234S#T&R is an advanced real-time clock module that offers high precision and accuracy, designed with a built-in temperature-compensated crystal oscillator (TCXO) for stable timekeeping across various environmental conditions. This chip was created by Maxim Integrated and is extremely compatible with a variety of microcontroller platforms since it communicates via the Serial Peripheral Interface (SPI). Its features include the capacity to run the clock even in the event of a power outage, a temperature sensor, and a customizable alarm.

Principal Characteristics and Specifications:

- Remarkable Precision: Delivers highly accurate timekeeping, a critical feature for applications where timing is essential.

- SPI Communication Interface: Enables efficient data transfer and control via a widely used digital communication protocol.

- Self-contained Crystal and TCXO: Offers exceptional stability and reliability in timekeeping without the need for external components.

- Power Failure Resilience: Features a battery backup input, essential for maintaining accurate time during power interruptions.

- Versatile Temperature Range: Performs reliably in a broad range of operating temperatures, suitable for diverse application conditions.

Application Scenario: Secure Time-stamped Communications Network

In this application, the DS3234S#T&R serves as the cornerstone for ensuring secure and accurate time-stamping of communications within a network, critical for logging, security protocols, and synchronization of data across multiple nodes.

Detailed Circuit Implementation:

1. SPI Bus Integration (MISO, Pin 12; MOSI, Pin 11; SCK, Pin 13; CS, Pin 10): Connect these pins to their respective counterparts on a microcontroller to establish SPI communication. This setup allows for full-duplex data exchange, with specific attention to the matching of SPI operational modes between the DS3234S#T&R and the microcontroller to ensure error-free communication.

2. Stable Power Supply Configuration (VCC, Pin 2; GND, Pin 16): Power the DS3234S#T&R with a consistent voltage source, adhering to its specifications, typically between 2.3V and 5.5V, and connect the ground pin to the system's common ground. Implementing decoupling capacitors near these pins is recommended to smooth out any voltage fluctuations and reduce noise.

3. Uninterrupted Operation Via Battery Backup (V_BAT, Pin 14): Attach a lithium coin cell battery, for example, a CR2032, to this pin to maintain the clock's operation during any loss of primary power. This feature is vital for ensuring continuous, accurate timekeeping.

4. Activation of the Internal Oscillator (X1, Pin 5; X2, Pin 4): The DS3234S#T&R's oscillator is internally connected and requires no external components, facilitating its high precision and ease of use in circuit designs.

5. Alarm and Interrupt Management (INT, Pin 7): Utilize this pin to configure alarms or interrupts within the DS3234S#T&R, enabling the system to perform specific actions, such as sending alerts or waking up from sleep modes, at predetermined times.

Circuit Design Considerations:

- Proper SPI Protocol Handling: Ensuring that the SPI communication is accurately configured to match the DS3234S#T&R's requirements is essential for reliable data exchange.

- Battery Life Optimization: Selecting and managing the backup battery wisely to maximize its lifespan while maintaining clock accuracy over time is crucial, especially in temperature-variable environments.

- Power Supply Integrity: Providing a clean and stable power supply to the DS3234S#T&R, through the use of decoupling capacitors and possibly voltage regulators, is fundamental for maintaining optimal performance.

- Electromagnetic Interference (EMI) Minimization: Designing the PCB layout to reduce EMI's impact, particularly on the SPI lines and oscillator circuit, will enhance system reliability.

- Adaptation to Environmental Conditions: While the DS3234S#T&R compensates for temperature fluctuations, extreme environmental conditions should be considered in the design to ensure system resilience.

Utilizing the DS3234S#T&R in a secure communications network underscores its capability to provide accurate, reliable time stamps for data transactions, a key element in maintaining the integrity and synchronization of network communications. This scenario highlights the DS3234S#T&R's adaptability and precision in applications where timing is crucial.

DS3234S#T&R information

DS3234S#T&R Specifications

Package/Case:
20-SOIC (0.295, 7.50mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Active
Type:
Clock/Calendar
Features:
Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal
MemorySize:
256B
TimeFormat:
HH:MM:SS (12/24 hr)
DateFormat:
YY-MM-DD-dd
Interface:
SPI
Voltage-Supply:
2V ~ 5.5V
Voltage-SupplyBattery:
2V ~ 3.8V
Current-Timekeeping(Max):
120µA ~ 160µA @ 3.63V ~ 5.5V
OperatingTemperature:
0°C ~ 70°C
MountingType:
Surface Mount

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6. What is the process for return or replacement of DS3234S#T&R?

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(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 DS3234S#T&R.

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

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(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations