DS1338Z

50 INR

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Product Details:

Input I2C serial interface (SDA, SCL)
Features BCD-coded clock/calendar; Leap year compensation up to year 2100; Simple serial interface; Low power operation
Power Source External VCC (with battery backup option)
Interface I2C (400kHz fast mode compatible)
Operating Temperature -40C to +85C
Resolution Seconds, Minutes, Hours, Day, Date, Month, Year (with leap year compensation)
Components RTC IC, oscillator circuit
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Product Description

DS1338Z Price And Quantity

Minimum Order Quantity 20 Piece
Price 50 INR

DS1338Z Product Specifications

Operating Temperature -40C to +85C
Current Rating 500nA timekeeping mode (typical at 3V)
Output Time and calendar data (via I2C); 32.768kHz output
Color Black (body); White (markings)
Thickness 1.75mm (SOIC-8 package MAX)
Product Type IC Real Time Clock
Interface I2C (400kHz fast mode compatible)
Components RTC IC, oscillator circuit
Size Small Outline Integrated Circuit (SOIC-8)
Rated Voltage Not Applicable (digital IC)
Usage Timekeeping and calendar functions in embedded systems
Power Supply Operates from single 2.0V to 5.5V supply
Supply Voltage 2.0V5.5V
Frequency 32.768kHz crystal oscillator
Resolution Seconds, Minutes, Hours, Day, Date, Month, Year (with leap year compensation)
Application Consumer devices, industrial controllers, instrumentation, computer peripherals
Power Source External VCC (with battery backup option)
Weight Approx. 0.05g (typical for 8-SOIC)
Function Real-Time Clock (RTC) with integrated crystal and battery backup circuit
Dimension (L*W*H) 5.02mm 3.99mm 1.75mm (typical for SOIC-8)
Features BCD-coded clock/calendar; Leap year compensation up to year 2100; Simple serial interface; Low power operation
Input I2C serial interface (SDA, SCL)

Product Description

Specification

Base Part Number	DS1338
Type	Clock/Calendar
Mounting Type	Surface Mount
Voltage Supply Battery	1.3 V ~ 3.7 V
Voltage Supply	3 V ~ 5.5 V
Time Format	HHMMSS (12/24 hr)
Supplier Device Package	8-SOIC
Part Status	Active
Packaging	Cut Tape (CT)
Package Case	8-SOIC (0.154", 3.90mm Width)
Operating Temperature	-40 deg C ~ 85 deg C
Memory Size	56B
Interface	I2C, 2-Wire Serial
Features	Leap Year, NVSRAM, Square Wave Output
Date Format	YY-MM-DD-dd
Current Timekeeping Max	125uA ~ 200uA @ 3.63V ~ 5.5V

Integrated Timekeeping for Embedded Applications

The DS1338Z RTC provides calendar and clock functions with leap year compensation using its built-in 32.768kHz oscillator. Its BCD-coded interface and robust, space-saving SOIC-8 package make it ideal for embedded systems timekeeping needs.

Reliable Operation with Battery Backup

This device maintains accurate time and date even during power interruptions, thanks to its battery backup capability. Supporting external batteries, it ensures data retention in mission-critical and portable applications.

Fast and Simple Connectivity

The DS1338Z utilizes a fast-mode I2C interface (up to 400kHz), allowing easy communication with MCUs in a broad range of consumer and industrial products. Its digital, low-power design supports both 24-hour and 12-hour time formats.

FAQs of DS1338Z:

Q: How is battery backup supported in the DS1338Z RTC?

A: The DS1338Z includes a built-in circuit specifically for external battery backup. This ensures real-time clock and calendar functions continue even when the primary power supply is interrupted, maintaining accurate data.

Q: What features make the DS1338Z suitable for surface mount applications?

A: The DS1338Z is provided in a compact 8-pin SOIC package designed for surface mounting (SMD/SMT), making it easy to integrate into high-density boards for consumer, industrial, or computing devices.

Q: When should an external battery be used with this device?

A: An external battery should be used when uninterrupted timekeeping is required during power loss. The battery backup keeps the RTC active, ensuring time and date information is preserved until main power returns.

Q: Where can the DS1338Z be commonly used?

A: It is commonly used in consumer electronics, industrial controllers, instrumentation devices, and computer peripherals, wherever precise time and date tracking is necessary.

Q: What process is recommended for interfacing the DS1338Z in embedded systems?

A: Interfacing is straightforward using its I2C-compatible SDA and SCL pins. The RTC communicates over I2C at speeds up to 400kHz, allowing simple integration with most microcontrollers.

Q: How does the DS1338Z benefit embedded designers?

A: Designers benefit from low power consumption, flexible time format options, reliable timekeeping with leap year adjustment, RoHS compliance, and ease of integration with standard I2C protocol.

Q: What is the recommended crystal load capacitance for the on-chip oscillator?

A: The recommended load capacitance for the internal oscillator circuit is 12.5pF, ensuring optimal oscillator performance and precise time accuracy.

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