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DS1302S
+БОМIC RTC CLK/CALENDAR SER 8-SOIC
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ПроизводительКомпания Analog Devices Inc./Maxim Integrated
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Мфр. Часть #DS1302S
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Лист данных DS1302S DataSheet
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В наличии2071
365 Дни гарантии качества
7*24 часы обслуживания каранти
90-гарантия послепродажного дня
Гарантия подлинного продукта
Спецификации
| Атрибут | Ценность |
| 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) |
Обзор
Description
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
Features
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
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
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
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.