Description
The PCF2129T/2,518 is a high-precision Real-Time Clock (RTC) and calendar IC featuring an integrated temperature-compensated crystal oscillator (TCXO) and a 32.768kHz quartz crystal. Engineered for applications where timing accuracy is critical, this device ensures exceptional precision even across fluctuating temperature ranges while maintaining an extremely low power footprint.
This versatile RTC offers selectable I²C or SPI bus interfaces, allowing for flexible integration into diverse system architectures. It includes advanced power management features, such as an integrated backup battery switch-over circuit to ensure continuous operation during main power failure. With additional functionality like a programmable watchdog timer, a dedicated timestamp feature, and oscillator stop detection, the PCF2129T/2,518 is an ideal solution for professional metering, industrial automation, and high-reliability timing systems.
Key Features
- Ultra-High Accuracy: Integrated TCXO ensures stable timing performance over a wide temperature range.
- Dual Interface: Selectable I²C-bus or SPI-bus communication for versatile system design.
- Power Management: Built-in battery backup input and seamless switch-over circuitry.
- Integrated Diagnostics: Includes oscillator stop detection to ensure system integrity.
- Enhanced Functionality: Programmable watchdog timer and dedicated timestamp function with interrupt capability.
- Reliable Packaging: Housed in a 16-pin SOIC package for robust and stable PCB mounting.
Applications
- Metering: Highly accurate time-stamping for utility and energy management systems.
- Automation & Process Control: Reliable synchronization and event triggering in industrial environments.
- Clock & Timing: Precision timing reference for embedded hardware requiring stable real-time data.
Package Includes
- 1 x PCF2129T/2,518 Calendar and Clock IC (SOIC-16)
Technical Specifications
| Parameter | Specification |
|---|---|
| Device | PCF2129T/2,518 |
| Brand | NXP |
| Calendar/Clock Format | YYYY:MM:WK:DD:hh:mm:ss / Binary |
| Interfaces | I²C, SPI |
| Supply Voltage | 1.8V – 4.2V |
| Operating Temp | -40°C to +85°C |
| Package Type | SOIC-16 |
| Shipping Weight | 0.005 kg |
| Shipping Dimensions | 5 × 5 × 1 cm |
Note: Product images are shown for illustrative purposes only and may differ from the actual product. For complete technical parameters, please refer to the official device datasheet.
