DFRobot
Fermion: DS3232 Precise RTC (Breakout)
A high-precision real-time clock (RTC) breakout board based on the DS3232 chip, featuring an integrated crystal resonator and temperature compensator. The DS...
A high-precision real-time clock (RTC) breakout board based on the DS3232 chip, featuring an integrated crystal resonator and temperature compensator. The DS3232 maintains accuracy of ±3.5ppm (±0.3 seconds/day) across the full operating range of -40°C to +85°C, making it ideal for applications that demand reliable, precise timekeeping.
The DS3232 integrates 236 bytes of battery-backed SRAM for data storage at extremely low power consumption, and maintains accurate timekeeping when main power is interrupted via a backup battery input. The module communicates over I2C and is compatible with 3.3V and 5V controllers.
Key Features
- ±3.5ppm Accuracy – ±0.3 seconds/day drift across -40°C to +85°C
- Integrated Crystal Resonator – No external crystal needed, with temperature compensation
- 236-Byte SRAM – Battery-backed storage for low-power data logging
- Battery Backup – Maintains timekeeping during power interruptions (CR1220 battery, not included)
- Two Programmable Alarms – Time-of-day alarm outputs
- Programmable Square Wave Output – Configurable frequency output
- 12/24 Hour Format – With AM/PM indicator in 12-hour mode
- Reset Pin – Can be used as a push-button input for microprocessor reset
Specifications
- Chip – DS3232
- Operating Voltage – 3.3–5.5V
- I2C Address – 0x68
- SRAM – 236 bytes (0x14–0x1F)
- Timing Range – 1970–2100
- Timing Accuracy – ±3.5ppm (±0.3 sec/day)
- Operating Temperature – -40°C to +85°C
- Board Dimensions – 22.5 × 21mm
Ideal For
- IoT data collection and timestamping
- MCU external wake-up source
- Precision clocks and alarm systems
- Low-power data logging with battery backup
Package Contents
- 1× Fermion DS3232 Precise RTC Breakout
- 1× 2.54mm 7-pin header
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- I2C address
- An I2C address is the number a device uses so a microcontroller can tell it apart from other devices on the same I2C bus. It matters because two devices with the same fixed address may conflict if used together.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- RTC
- A Real-Time Clock keeps track of time even when the main processor is asleep or powered down, usually with a small backup battery. It matters for data logging and tracking projects that need accurate timestamps.
- SRAM
- Fast temporary memory used by a processor while a program is running. More SRAM helps with projects that handle larger data buffers, networking, displays, or more complex code.
- Temperature compensation
- Temperature compensation means the sensor adjusts its readings to reduce errors caused by changes in water temperature. This matters for field monitoring because ponds, rivers, and tanks can vary in temperature throughout the day and across seasons.
Find this product in
Supplier page — dfrobot.com
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Related Tutorials
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