DS1388Z-3

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DS1388Z-3

IC RTC CLK/CALENDAR I2C 8SOIC

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Specifications

Part Status Active
DigiKey Programmable Not Verified
Type Clock/Calendar
Features EEPROM, Leap Year, Supervisor, Trickle-Charger, Watchdog Timer
Memory Size 512B
Time Format HH:MM:SS:hh (12/24 hr)
Date Format YY-MM-DD-dd
Interface I2C, 2-Wire Serial
Voltage - Supply 2.7V ~ 3.3V
Voltage - Supply, Battery 1.3V ~ 5.5V
Current - Timekeeping (Max) 140µA @ 2.7V ~ 3.3V
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC
Base Product Number DS1388

Overview

Description

The DS1388Z-3 is a real-time clock (RTC) integrated circuit designed by Maxim Integrated (now part of Analog Devices). It is optimized for low power consumption and accurate timekeeping, making it suitable for battery-operated devices. The chip features a 32.768 kHz crystal oscillator, allowing it to maintain precise time in various applications such as embedded systems, industrial equipment, and consumer electronics.
Key features include a wide operating voltage range (2.0V to 5.5V), a programmable alarm function, and the ability to keep track of time in both 12-hour and 24-hour formats. The DS1388Z-3 also supports I²C and SPI communication interfaces, enabling easy integration with microcontrollers and other digital systems.
The device is packaged in a compact 8-pin SOIC or DIP format, making it suitable for space-constrained designs. Its low power operation and reliable performance make the DS1388Z-3 a popular choice for applications that require accurate timekeeping with minimal energy consumption.

Features

The DS1388Z-3 is a real-time clock (RTC) with a variety of features designed for timekeeping applications. Key features include:
1. Timekeeping Accuracy: It has a typical accuracy of ±2 minutes per year.
2. Power Supply: Operates at a voltage range of 2.0V to 5.5V, making it versatile for different systems.
3. Low Power Consumption: It features low power consumption in both active and standby modes, with a typical current draw of 500 nA in battery backup mode.
4. Alarm Functionality: Includes programmable alarms for time/date events.
5. Clock Output: Provides a selectable square wave output.
6. Interface: Communicates via I²C, allowing easy integration with microcontrollers.
7. Battery Backup: Supports battery backup to maintain time during power loss.
8. Programmable Interrupt: Features a programmable interrupt output for various time-based events.
These features make the DS1388Z-3 ideal for applications in embedded systems, consumer electronics, and industrial devices.

Package

The DS1388Z-3 is packaged in a 32-pin TQFP (Thin Quad Flat Package). This surface-mount package is designed for compact applications, offering a low profile and efficient thermal performance.

Pinout

The DS1388Z-3 is a real-time clock (RTC) device with a total of 8 pins. Its functions are as follows:
1. VCC (Pin 1): Power supply input, typically 3V.
2. GND (Pin 2): Ground connection.
3. X1 (Pin 3): Connection for the external crystal oscillator (32.768 kHz).
4. X2 (Pin 4): Second connection for the external crystal oscillator.
5. SQW/INT (Pin 5): Square Wave/Interrupt output, can generate a periodic square wave or provide an interrupt signal.
6. DS (Pin 6): Data input pin for serial communication.
7. SCLK (Pin 7): Serial clock input for synchronizing communication.
8. CE (Pin 8): Chip Enable pin, used to activate the device for communication.
The DS1388Z-3 is designed for battery-backed applications, providing precise timekeeping and multiple alarms.

Manufacturer

The DS1388Z-3 is manufactured by Maxim Integrated, which is now part of Analog Devices, Inc. Maxim Integrated is a semiconductor company that specializes in designing and manufacturing analog and mixed-signal integrated circuits (ICs). They focus on a wide range of applications, including power management, signal processing, and sensing technologies. The DS1388 is a real-time clock (RTC) chip that provides timekeeping functionality for various electronic devices. The company is known for its innovation in high-performance analog solutions and has a strong presence in markets such as industrial, automotive, telecommunications, and consumer electronics.

Application

The DS1388Z-3 is a real-time clock (RTC) with a built-in oscillator, primarily used in applications requiring precise timekeeping, such as in consumer electronics, industrial automation, telecommunications, and embedded systems. Its features make it suitable for data loggers, personal digital assistants (PDAs), automotive systems, and any device needing time-stamping or scheduling functionalities.

Equivalent

The DS1388Z-3 is a real-time clock (RTC) chip. Equivalent products include the DS1307, DS3231, and MCP7940M. These alternatives offer similar functionalities in timekeeping and may vary slightly in features like power consumption and accuracy. Always check specifications to ensure compatibility for your specific application.

Shipping

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Shipping Fee Reference (DHL/FedEx):

DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.

FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.

UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.

Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.

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