DS1302S

画像は参考用です

DS1302S

+BOM

IC RTC CLK/CALENDAR SER 8-SOIC

365 日間品質保証

7*24 日間の品質保証

90-時間単位のサービス保証

1日間のアフターサービス保証

仕様

属性
Supplier Analog Devices Inc./Maxim Integrated
Package Tube
ProductStatus Active
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)

概要

Description

The DS1302S is a Real-Time Clock (RTC) integrated circuit used for keeping track of time and date. It is a low-power, full binary-coded decimal (BCD) clock/calendar with the ability to maintain seconds, minutes, hours, day, date, month, and year information, including leap-year compensation up to 2100. The DS1302S can operate in either 24-hour or 12-hour format with an AM/PM indicator.
It features dual power pins — a main power source and a backup battery, allowing it to continue timekeeping when the main power is off. The DS1302S communicates with a microcontroller through a simple serial interface, which conserves microcontroller I/O pins. It integrates 31 bytes of static RAM for user data storage, alongside the clock functions.
The device supports trickle-charge capability, which can be used with an external battery to maintain timekeeping. Typical applications include time-stamping systems, data loggers, and any electronic device requiring accurate timekeeping. Its small footprint and low power consumption make it ideal for embedded systems.

Equivalent

The DS1302S is a real-time clock (RTC) chip with RAM. Equivalent products include the DS1307 and DS3231, which are also RTC chips with similar functionalities. The DS1307 is widely used for basic RTC applications, while the DS3231 offers better accuracy and additional features like a temperature-compensated crystal oscillator. Other alternatives might include the MCP7940N from Microchip and the PCF8563 from NXP, which offer similar RTC functionalities. Always verify compatibility and specific features for your application needs.

Features

The DS1302S is a real-time clock (RTC) IC that provides accurate timekeeping in various applications. Key features include:
1. Timekeeping Functions: Tracks seconds, minutes, hours, day, date, month, and year with leap-year compensation up to the year 2100.
2. Dual Power Supply: Supports a main power supply and a backup battery, ensuring it maintains time during power failures.
3. Trickle-Charge Capability: Includes a trickle charger for recharging a backup battery, extending the longevity of the RTC function.
4. Low Power Consumption: Designed for minimal power usage, making it suitable for battery-operated devices.
5. Serial Communication: Utilizes a simple 3-wire interface (I/O, SCLK, and CE) for easy integration and communication with microcontrollers.
6. Clock and Calendar: Works in both 12-hour and 24-hour formats, with an AM/PM indicator for the 12-hour format.
7. Temperature Range: Operates effectively in industrial temperature ranges, typically from -40°C to +85°C.
8. Compact Package: Available in small form-factor packages, suitable for space-constrained applications.
These features make the DS1302S suitable for use in consumer electronics, industrial systems, and any application requiring reliable timekeeping.

Pinout

The DS1302S is a real-time clock (RTC) integrated circuit used for keeping track of time and date. It typically comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. Here's a brief overview of its pin functions:
1. VCC2 (Pin 1): Secondary power supply (battery backup).
2. X1 (Pin 2): Connection for the external 32.768 kHz crystal oscillator input.
3. X2 (Pin 3): Connection for the external 32.768 kHz crystal oscillator output.
4. GND (Pin 4): Ground reference.
5. RST (Pin 5): Reset pin, used to initialize communication.
6. I/O (Pin 6): Data input/output pin for serial communication.
7. SCLK (Pin 7): Serial clock input.
8. VCC1 (Pin 8): Primary power supply.
The DS1302S keeps time and date information in registers accessible via a simple serial interface. It features dual power supply pins for maintaining timekeeping when the main power is off, allowing the device to operate on a backup battery.

Manufacturer

The DS1302S is a real-time clock (RTC) chip originally manufactured by Dallas Semiconductor. Dallas Semiconductor was a company that specialized in designing and manufacturing a wide range of semiconductor products, including clock chips, microcontrollers, and memory products. The company was known for its focus on developing innovative integrated circuits used in numerous electronic applications.
In 2001, Dallas Semiconductor was acquired by Maxim Integrated, a company that designs, manufactures, and sells analog and mixed-signal integrated circuits for a wide variety of industries, including consumer electronics, automotive, communications, and industrial sectors. Maxim Integrated has continued to produce many of the legacy products initially developed by Dallas Semiconductor, including the DS1302S.
In 2021, Maxim Integrated itself was acquired by Analog Devices, Inc., a company recognized for its extensive involvement in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. Analog Devices serves various markets, such as industrial, healthcare, automotive, communications, and consumer electronics, further expanding the reach and application of products like the DS1302S RTC chip.

Application

The DS1302S is a real-time clock (RTC) chip used in various applications requiring accurate timekeeping. Common application areas include:
1. Embedded Systems: Used in microcontroller-based systems for maintaining time and date.
2. Consumer Electronics: Found in devices like VCRs, DVRs, and other home appliances for clock functionality.
3. Computers: Used in motherboards to maintain system time when powered off.
4. Industrial Automation: Employed in systems that require time-stamped data logging.
5. Communication Devices: Ensures accurate timing for communication protocols.
6. Security Systems: Keeps track of time for events and alarms.
Its low power consumption and ability to retain time during power failures make it suitable for battery-operated and low-power devices.

Package

The DS1302S is a real-time clock (RTC) integrated circuit, and its package type is an 8-pin SOIC (Small Outline Integrated Circuit). This surface-mount technology package is compact and typically used in various electronic applications for timekeeping functions.

DS1302Sに関連する製品