DS1302S+T&R

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DS1302S+T&R

IC RTC CLK/CALENDAR SER 8-SOIC

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Bảo hành 365 ngày

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Thông số kỹ thuật

Supplier Analog Devices Inc./Maxim Integrated
Package Tape & Reel (TR)
ProductStatus Obsolete
Type Clock/Calendar
Features Leap Year, NVSRAM, Trickle-Charger
MemorySize 31B
TimeFormat HH:MM:SS (12/24 hr)
DateFormat YY-MM-DD-dd
Interface 3-Wire Serial
Voltage-Supply 2V ~ 5.5V
Voltage-SupplyBattery 2V ~ 5.5V
Current-Timekeeping(Max) 0.3µA ~ 1µA @ 2V ~ 5V
OperatingTemperature 0°C ~ 70°C
MountingType Surface Mount
Package/Case 8-SOIC (0.209, 5.30mm Width)

Tổng quan

Description

The DS1302S+T&R is a real-time clock (RTC) integrated circuit manufactured by Maxim Integrated. It is designed to keep track of the current time and date, even when the main system power is off, thanks to its battery backup capability. The device communicates with microcontrollers via a simple serial interface, making it suitable for various applications, including embedded systems, time-stamping, and data logging.
Key features of the DS1302S+T&R include:
- Timekeeping Accuracy: Maintains time with a typical accuracy of ±2 minutes per month.
- Battery Backup: Allows operation on a backup battery when the primary power supply is disconnected.
- Alarm Functionality: Supports programmable alarms and periodic interrupts.
- Low Power Consumption: Ideal for battery-operated devices.
- Temperature Compensation: Offers improved accuracy with temperature variations.
The DS1302S+T&R is commonly used in consumer electronics, industrial automation, and communication systems where precise timekeeping is essential.

Features

The DS1302S+T&R is a real-time clock (RTC) chip designed for timekeeping applications. Key features include:
1. Real-Time Clock: Maintains accurate time (hours, minutes, seconds) and date (year, month, day) with a built-in oscillator.
2. Low Power Consumption: Operates with minimal power, making it suitable for battery-operated devices.
3. Simple Interface: Communicates via a serial interface, allowing easy integration with microcontrollers.
4. Battery Backup: Supports a backup battery to ensure timekeeping during power outages.
5. Programmable Square Wave Output: Can generate a square wave signal for timing applications.
6. Programmable Alarm Function: Features alarms for time-based notifications.
7. Temperature Compensated: Designed to maintain accuracy across a wide temperature range.
8. Compact Package: Available in a small form factor, ideal for space-constrained applications.
These features make the DS1302S+T&R suitable for various applications, including consumer electronics, industrial equipment, and portable devices.

Package

The DS1302S+T&R is packaged in a 8-pin SOP (Small Outline Package), which is a surface-mount form factor suitable for compact designs.

Pinout

The DS1302S+T&R is a low-power real-time clock (RTC) IC with a pin count of 8. The function of each pin is as follows:
1. VCC (Pin 1): Power supply input (2.0V to 5.5V).
2. GND (Pin 2): Ground reference.
3. CLK (Pin 3): Serial clock input for data transfer.
4. IO (Pin 4): Bidirectional serial data input/output pin.
5. CE (Pin 5): Chip enable input; activates the device for communication.
6. RST (Pin 6): Reset input; initializes the device.
7. TC (Pin 7): Timekeeping control; used for setting conditions such as battery backup.
8. VBAT (Pin 8): Backup battery input for maintaining time during power loss.
The DS1302 is commonly used in applications requiring timekeeping functions, with features like a programmable square wave output and a low-power consumption design.

Manufacturer

The DS1302S+T&R is manufactured by Maxim Integrated, which is now a part of Analog Devices, Inc. Maxim Integrated was known for designing and manufacturing a wide range of analog and mixed-signal integrated circuits (ICs). The company specialized in products such as data converters, sensors, power management solutions, and real-time clocks, among others. Their focus was on providing solutions that enhance performance and efficiency for various applications in consumer electronics, automotive, industrial, and telecommunications sectors. The acquisition by Analog Devices in 2021 expanded their portfolio and strengthened their capabilities in the semiconductor industry.

Application

The DS1302S+T&R is a real-time clock (RTC) integrated circuit used in various applications, including digital clocks, timers, and event counters. It is commonly found in microcontroller-based systems, data loggers, appliances, and automotive electronics. Its ability to maintain timekeeping during power outages makes it suitable for battery-powered devices, smart meters, and home automation systems. The chip provides accurate timekeeping with low power consumption, making it ideal for portable and energy-efficient applications.

Equivalent

The DS1302S+T&R chip is a real-time clock (RTC) that can be replaced by equivalent products such as the DS1307, DS3231, and MCP7940M. Each of these alternatives offers similar functionalities, including timekeeping, battery backup, and I2C/SPI interfaces, but may have variations in features like power consumption and precision. Always consult specific datasheets for compatibility and requirements.

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