About this item

⏱️ DS1302 Real-Time Clock (RTC) Module

The DS1302 RTC Module is a compact real-time clock that keeps accurate time and date, even when power is lost.
With its backup battery (coin cell), it can retain data for years, making it an essential component for projects requiring reliable timestamping.

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🛡️ Benefits & Safety

• 🔋 Backup battery support (CR2032 coin cell)
• ⏱️ Maintains time and date during power failure
• ⚡ Ultra-low power consumption
• 🛠️ Simple serial communication

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⚡ Key Features

• 🔌 Chip: DS1302 RTC
• ⏱️ Functions: seconds, minutes, hours, day, month, year (leap year supported)
• 🔋 Battery: CR2032 (not included in some versions)
• 🔧 Interface: 3-wire serial (I/O, SCLK, CE)
• 📏 Compact form factor, microcontroller-friendly

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📦 Compact & Convenient

• Easy to interface with Arduino, ESP32, Raspberry Pi, etc.
• Lightweight and durable module
• Simple 5-pin header connection
• Excellent timekeeping stability

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🛠️ Applications

• 🖥️ Data logging systems
• ⏲️ Programmable timers and alarms
• 📱 IoT projects requiring timestamps
• 🚪 Access control and automation systems
• 🧪 DIY electronics and experiments

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⚠️ Notes

• ❗ Check polarity when installing the CR2032 battery
• 🔋 Battery powers the timekeeping, not the whole module
• 📖 Use Arduino/ESP libraries for quick development

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✨ Technical Specifications

• 📏 Dimensions: approx. 45 × 15 × 12 mm
• 🔌 Operating voltage: 2V – 5.5V
• ⚡ Power consumption: ≤ 1 µA in backup mode
• ⏱️ Accuracy: external 32.768 kHz quartz crystal
• 🧩 Interface: 3-wire serial
• 🔋 Backup: CR2032 battery (3V)

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