The NXP PCF2129AT/1,518 is a highly accurate Real-Time Clock (RTC) module that offers a rich set of features designed to meet the needs of a wide range of applications. This RTC provides timekeeping with a precision oscillator that has a very low power consumption, making it ideal for battery-powered systems.

Key Features

• Accuracy: Equipped with an integrated Temperature-Compensated Crystal Oscillator (TCXO) and a 32.768 kHz quartz crystal, the device ensures high accuracy and minimal drift over time and temperature variations.
• Power Management: The PCF2129AT/1,518 features a power management system with a backup battery switch-over, a timestamp for battery switchover, and a programmable clock output for peripheral devices.
• Interface: It supports both I²C-bus and Serial Peripheral Interface (SPI) for communication with microcontrollers, allowing for versatility in system design.
• Programmable Alarms: With programmable alarm and timer functions, it can be configured to generate interrupts or clock signals at specific times, aiding in system wake-up and time-based actions.
• Memory: The device includes 240 bytes of RAM for user data storage, providing additional flexibility for applications.

Applications

The PCF2129AT/1,518 is suitable for a diverse array of applications, including:

• Telecommunication devices
• Consumer electronics
• Industrial systems
• Handheld devices
• Data loggers
• Utility meters

Technical Specifications

• Package: SO16
• Supply Voltage: 1.8 V to 5.5 V
• Frequency: 32.768 kHz
• Operating Temperature: -40°C to +85°C

Overall, the NXP PCF2129AT/1,518 stands out as a robust and reliable RTC solution that offers precision timekeeping and a wealth of features to enhance system performance and reliability.