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DS1302Z is a real-time clock chip produced by Analog Devices (ADI), featuring a 3-wire serial interface. It offers timing functions for year, month, day, week, hour, minute, and second, and is equipped with 31-byte static RAM. ‌

Type: Clock/Calendar

Features: Leap year, NVSRAM, trickle charger

Storage capacity: 31B

Time format: HH: MM: SS (12/24 hours)

Date format: YY-MM-DD-dd

Interface: 3-wire serial port

Voltage - Power supply: 2V to 5.5V

Voltage - Power supply, battery: 2V - 5.5V

Current-meter (maximum value) : 0.3µA to 1µA @ 2V to 5V

Operating temperature: 0°C to 70°C

Installation type: Surface mount type

Packaging/Housing: 8-SOIC

Application scenarios

The DS1302Z clock chip is widely used in battery-powered devices (such as electronic clocks and calculators), embedded systems and scenarios that require precise timekeeping.

For details

The DS1302Z is a clock chip with trickle charging, featuring a real-time clock/calendar and 31-byte static RAM. The DS1302Z communicates with the microprocessor through a simple serial interface. The real-time clock/calendar provides information on seconds, minutes, hours, days of the week, dates, months and years. For months with less than 31 days, the date at the end of the month will be automatically adjusted. DS1302Z includes corrections for leap years. The clock operates in 24-hour format or 12-hour format with AM/PM indicators.

In addition, by using synchronous serial communication, the interface between DS1302Z and the microprocessor has been simplified. Only three wires are needed to communicate with the clock /RAM: CE, I/O (data line), and SCLK (serial clock). When transmitting data between the clock /RAM, it can be one byte at a time or up to 31 bytes in a single burst. The DS1302Z has extremely low power consumption during operation and retains data and clock information with a power consumption of less than 1µW.

DS1302Z is the successor version of DS1202. In addition to the basic timing function of DS1202, DS1302Z also features other characteristics, including dual power pins for the main power supply and backup power supply, a programmable trickle charger for VCC1, and seven additional bytes of temporary memory.

Core features

Fully manage all timing functions

Real-time clocks can count in seconds, minutes, hours, dates, months, days of the week and years. Leap year compensation is valid until the year 2100

31 x 8 battery-powered universal RAM

Interface with most microcontrollers through a simple serial port

Simple 3-wire interface

TTL compatible (VCC = 5V)

Single-byte or multi-byte (burst mode) data transmission used for reading or writing clock or RAM data

Low-power operation can extend the operating time of the backup battery

It operates fully from 2.0V to 5.5V

The current consumption is less than 300nA at 2.0V

The 8-pin DIP and 8-pin SO packages significantly reduce the required space

Optional industrial temperature range: -40°C to +85°C, supporting operation in a variety of applications

Accredited by Underwriters Laboratories® (UL)

Contact Mingjiada Electronics immediately to obtain the purchase quotation for DS1302Z clock chips

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