Overview
The PCF85263ATL/A115, produced by NXP USA Inc., is a CMOS Real-Time Clock (RTC) and calendar integrated circuit designed for low power consumption. This device is optimized for applications requiring precise timekeeping and features automatic switching to a battery backup in case of main power loss. It includes a range of functionalities such as a stopwatch mode, time stamp input, and an I2C-bus interface, making it versatile for various electronic systems.
Key Specifications
| Parameter | Description |
|---|---|
| Package Type | SO8, DFN2626-10, TSSOP8, TSSOP10, WLCSP12 |
| Clock Frequency | 32.768 kHz quartz crystal |
| Interface | I2C-bus with a maximum data rate of 400 kbit/s |
| Power Supply | Main power and battery backup with automatic switch-over |
| Time Resolution | Year, month, day, weekday, hours, minutes, seconds, and 100th seconds |
| Stopwatch Mode | Elapsed time counting from 100th seconds to 999,999 hours |
| Alarms | Two independent alarms |
| Interrupt Signals | Two independent interrupt signals (INTA and INTB) |
| Timestamp Registers | Three time log registers triggered from battery switch-over and input-driven events |
Key Features
- Low power consumption optimized for battery-powered devices
- Automatic switching to battery backup on main power loss
- Stopwatch mode for elapsed time counting
- Two independent alarms and two interrupt signals
- I2C-bus interface with a maximum data rate of 400 kbit/s
- On-chip 32.768 kHz oscillator with integrated capacitors
- UL Recognized Component (PCF85263ATL)
- Time stamp input and clock output
- Quartz crystal calibration
Applications
- Battery-powered devices requiring precise timekeeping
- Industrial control systems and automation
- Consumer electronics such as smart home devices and wearables
- Automotive systems needing real-time clock functionality
- Medical devices and healthcare equipment
Q & A
- What is the primary function of the PCF85263ATL/A115?
The primary function is to serve as a Real-Time Clock (RTC) and calendar with additional features like stopwatch mode, alarms, and timestamp logging.
- What type of interface does the PCF85263ATL/A115 use?
The device uses an I2C-bus interface with a maximum data rate of 400 kbit/s.
- How does the PCF85263ATL/A115 handle power loss?
The device automatically switches to a battery backup in case of main power loss.
- What is the resolution of the timekeeping in the PCF85263ATL/A115?
The time resolution includes year, month, day, weekday, hours, minutes, seconds, and 100th seconds.
- Does the PCF85263ATL/A115 have any certification?
Yes, it is a UL Recognized Component.
- What is the range of the stopwatch mode in the PCF85263ATL/A115?
The stopwatch mode can count elapsed time from 100th seconds to 999,999 hours.
- How many alarms does the PCF85263ATL/A115 support?
The device supports two independent alarms.
- What is the purpose of the timestamp registers in the PCF85263ATL/A115?
The timestamp registers log time events triggered by battery switch-over and input-driven events.
- What types of packages are available for the PCF85263ATL/A115?
The device is available in SO8, DFN2626-10, TSSOP8, TSSOP10, and WLCSP12 packages.
- What is the clock frequency used by the PCF85263ATL/A115?
The clock frequency is 32.768 kHz based on a quartz crystal.
