Alarm Rtc, Spi, 5.5V, Soic-20; Date Format:Day; Date; Month; Year; Clock Format:Hh:Mm:Ss; Clock Ic Type:Alarm Rtc; Supply Voltage Min:2V; Supply Voltage Max:5.5V; Clock Ic Case Style:Soic; No. Of Pins:20Pins; Ic Interface Type:Spi Rohs Compliant: Yes |Analog Devices DS3234SN#

DS3234SN# – High-Precision Real-Time Clock IC with SPI Interface – Analog Devices

Ensure precise timekeeping in critical applications with the DS3234SN# real-time clock IC from Analog Devices. This surface-mount component delivers exceptional accuracy (±2ppm from 0°C to +40°C) with integrated temperature-compensated crystal oscillator (TCXO), making it ideal for systems requiring reliable timestamping and scheduling. PCX supplies this active-status IC with fast shipping and dedicated technical support.

Key Features

• Type: Clock/Calendar with SPI Interface
• Memory: 256B NV SRAM for data retention
• Voltage Range: 2V to 5.5V (Supply), 2V to 3.8V (Battery Backup)
• Ultra-Low Power: Only 120µA–160µA timekeeping current
• Operating Temp: Industrial-grade -40°C to +85°C
• Form Factor: 20-SOIC (7.50mm Width) surface-mount package

Technical Details

The DS3234SN# maintains time/date with automatic leap-year compensation in YY-MM-DD-dd format and supports 12/24-hour HH:MM:SS timekeeping. Its SPI serial interface enables simple microcontroller communication, while integrated alarms, square-wave outputs, and battery-switching circuitry ensure robust operation. The onboard TCXO compensates for crystal frequency drift across temperature fluctuations, maintaining ±3.5ppm accuracy from -40°C to +85°C.

Common Applications

• Industrial automation controllers
• Medical diagnostic equipment
• Data loggers and IoT edge devices
• POS systems and kiosks
• Backup power management systems

About Analog Devices

Analog Devices (ADI) is a global leader in high-performance semiconductor solutions, renowned for innovation in signal processing and precision timing technologies. Following its acquisition of Maxim Integrated, ADI combines decades of expertise in mission-critical IC design, serving aerospace, industrial, and communications sectors with components that exceed stringent reliability standards.

ADI’s rigorous quality control and continuous R&D investment ensure components like the DS3234SN# deliver industry-leading accuracy and longevity. Their products undergo extensive environmental and lifecycle testing, providing engineers with trusted solutions for demanding applications where component failure is not an option.

About Real-Time Clock ICs

Real-Time Clocks (RTCs) are essential integrated circuits that maintain accurate time and calendar functions independent of a system’s main processor. They provide critical timestamping capabilities during power loss via battery backup and enable scheduled operations in standalone devices. Modern RTCs integrate oscillators, temperature compensation, and non-volatile memory to minimize external components.

In embedded systems, RTC ICs ensure event synchronization, data integrity, and power management across industries—from regulating industrial machinery cycles to timestamping financial transactions. Their low power consumption and compact footprints make them indispensable for portable and space-constrained designs requiring autonomous timekeeping.

Packaging Options

Available in protective Tube packaging for secure handling during assembly. Compatible with standard pick-and-place equipment.

Frequently Asked Questions

Q: Does this RTC require an external crystal?
A: No – the DS3234SN# includes a temperature-compensated crystal oscillator (TCXO), eliminating external timing components.

Q: What battery voltage is supported for backup power?
A: It accepts 2V to 3.8V backup sources like coin cells or supercapacitors, with automatic switchover circuitry.

Q: Is the SRAM data retained during power loss?
A: Yes – the 256B SRAM is non-volatile and preserves data when switching to battery backup.

Q: Can I generate programmable interrupts?
A: Yes – dual alarm outputs trigger interrupts at user-defined times, and the configurable square-wave output supports frequencies from 1Hz to 32kHz.

Q: Why choose an RTC over microcontroller-based timing?
A: Dedicated RTC ICs offer higher accuracy, lower power consumption, and autonomous operation unaffected by MCU sleep states or resets.

Q: How does temperature compensation improve accuracy?
A: The integrated TCXO dynamically adjusts oscillator frequency across -40°C to +85°C, reducing timing drift to under 2 minutes/year versus hours/month in uncompensated designs.

Note: Product images are representational. Refer to the DS3234SN# datasheet for exact dimensions and schematics.

Optimize your system’s timing precision – order DS3234SN# RTC ICs from PCX today for reliable same-day shipping and expert support!