DS1302Z

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DS1302Z

IC RTC CLK/CALENDAR SER 8SOIC

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規格

Part Status Obsolete
DigiKey Programmable Not Verified
Type Clock/Calendar
Features Leap Year, NVSRAM, Trickle-Charger
Memory Size 31B
Time Format HH:MM:SS (12/24 hr)
Date Format YY-MM-DD-dd
Interface 3-Wire Serial
Voltage - Supply 2V ~ 5.5V
Voltage - Supply, Battery 2V ~ 5.5V
Current - Timekeeping (Max) 0.3µA ~ 1µA @ 2V ~ 5V
Operating Temperature 0°C ~ 70°C
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC
Base Product Number DS1302

概述

Description

The DS1302Z is a real-time clock (RTC) chip designed by Maxim Integrated, used for keeping track of time and date in electronic devices. It communicates via a serial interface, typically using an SPI protocol, making it easy to integrate with microcontrollers. The chip maintains accurate timekeeping with a built-in crystal oscillator, while also featuring battery backup, allowing it to retain time even when the main power supply is off.
Key features include a 24-hour clock format, calendar functions, and alarms. It can store time data in both BCD (binary-coded decimal) and binary formats, enabling flexibility in programming. The DS1302Z has low power consumption, making it suitable for battery-operated devices.
Applications include digital clocks, data loggers, and any electronic systems requiring real-time data tracking. Its compact design and ease of use make it a popular choice among hobbyists and professionals in electronics and embedded systems.

Features

The DS1302Z is a real-time clock (RTC) chip that offers several notable features:
1. Timekeeping: Maintains accurate time and date, including seconds, minutes, hours, day, month, and year, with leap year compensation.
2. Low Power Consumption: Operates on a low power supply, making it suitable for battery-operated devices.
3. Serial Communication: Uses a simple 3-wire serial interface (clock, data, and chip select) for easy integration with microcontrollers.
4. RAM Storage: Includes 31 bytes of SRAM for user data storage, allowing for additional information to be stored alongside timekeeping.
5. Battery Backup: Supports battery backup operation, ensuring timekeeping continues even during power outages.
6. Programmable Square Wave Output: Can generate a square wave signal with adjustable frequency.
7. Programmable Alarm: Features alarms for time-based events, providing additional functionality in applications.
8. Compact Package: Available in a small package, facilitating integration into space-constrained designs.
These features make the DS1302Z suitable for various applications, including clocks, timers, and data logging systems.

Package

The DS1302Z is typically available in a 16-pin DIP (Dual In-line Package) form factor. It may also be found in SMD (Surface Mount Device) packages, such as SOIC or TSSOP, depending on the manufacturer.

Pinout

The DS1302Z is a real-time clock (RTC) integrated circuit that features a total of 8 pins. The pin configuration and their functions are as follows:
1. VCC (Pin 1): Power supply, typically +3V to +5V.
2. GND (Pin 2): Ground reference.
3. SCLK (Pin 3): Serial clock input for synchronizing data transmission.
4. IO (Pin 4): Bidirectional serial data input/output for communication.
5. CE (Pin 5): Chip Enable input to activate the chip and initiate communication.
6. RESET (Pin 6): Resets the chip, initializing the internal registers.
7. X1 (Pin 7): Connection for the external 32.768 kHz crystal oscillator.
8. X2 (Pin 8): Second connection for the external crystal.
The DS1302Z is widely used for timekeeping applications, providing accurate time and date tracking in embedded systems.

Manufacturer

The DS1302Z is manufactured by Maxim Integrated, which is now part of Analog Devices, Inc. Maxim Integrated was founded in 1983 and specializes in analog and mixed-signal integrated circuits. The company focuses on providing a wide range of semiconductor products, including power management, interface, and sensor solutions, among others. Their products are widely used in various applications, such as consumer electronics, automotive, industrial, and medical devices. The DS1302Z is a real-time clock (RTC) chip known for its low power consumption and ability to keep track of time and date in battery-operated applications.

Application

The DS1302Z is a real-time clock (RTC) device used in various applications such as timekeeping in embedded systems, data logging, event scheduling, and timestamping in industrial automation. It's also employed in consumer electronics, smart appliances, and battery-backed systems where accurate time tracking is essential. Additionally, it can be used in alarm clock circuits and as a time reference in microcontroller-based projects.

Equivalent

The DS1302Z real-time clock can be replaced by several equivalent products, including the DS1307, DS3231, and MCP7940N. The DS1307 offers similar functionality but with a different power supply range, while the DS3231 includes temperature compensation for improved accuracy. The MCP7940N also features a battery backup and EEPROM. Always check specific features and pin configurations for compatibility.

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