Overview
The PCF85263AT/AJ, produced by NXP USA Inc., is a tiny Real-Time Clock (RTC) and calendar integrated circuit optimized for low power consumption. This device features automatic switching to battery backup on main power loss, making it highly reliable for applications requiring precise timekeeping. It includes an alarm function, time stamp input, and an I2C-bus interface for easy communication with other components. The PCF85263AT/AJ is suitable for a wide range of applications where accurate time and date tracking are essential.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SO8, TSSOP8, TSSOP10, DFN2626-10, WLCSP12 |
| Interface | I2C-bus with a maximum data rate of 400 kbit/s |
| Power Supply | 1.0 V to 5.5 V (VDD), Battery backup (VBAT) |
| Quartz Crystal Frequency | 32.768 kHz |
| Time and Date Resolution | Year, month, day, weekday, hours, minutes, seconds, and 100th seconds |
| Alarm Functions | Two independent alarms |
| Interrupt Signals | Two independent interrupt signals (INTA and INTB) |
| Stop-watch Mode | Elapsed time counting from 100th seconds to 999,999 hours |
| Environmental Compliance | PbFree, EU RoHS, Halogen Free, REACH SVHC compliant |
Key Features
- Tiny Real-Time Clock/calendar with automatic switching to battery backup on main power loss
- Alarm function with two independent alarms
- Time stamp input and stop-watch mode for elapsed time counting
- I2C-bus interface with a maximum data rate of 400 kbit/s
- Clock output and two independent interrupt signals (INTA and INTB)
- On-chip 32.768 kHz oscillator with integrated capacitors
- UL Recognized Component (for certain packages)
Applications
The PCF85263AT/AJ is suitable for various applications requiring precise time and date tracking, such as:
- Consumer electronics (e.g., smart home devices, wearables)
- Industrial automation and control systems
- Medical devices and healthcare equipment
- Automotive systems (e.g., infotainment, navigation)
- IoT devices and smart sensors
Q & A
- What is the primary function of the PCF85263AT/AJ?
The primary function is to provide a Real-Time Clock (RTC) and calendar with low power consumption and automatic battery backup. - What interface does the PCF85263AT/AJ use for communication?
The PCF85263AT/AJ uses an I2C-bus interface with a maximum data rate of 400 kbit/s. - What are the available package types for the PCF85263AT/AJ?
The available package types include SO8, TSSOP8, TSSOP10, DFN2626-10, and WLCSP12. - Does the PCF85263AT/AJ support stop-watch mode?
Yes, it supports stop-watch mode for elapsed time counting from 100th seconds to 999,999 hours. - Is the PCF85263AT/AJ environmentally compliant?
Yes, it is PbFree, EU RoHS, Halogen Free, and REACH SVHC compliant. - What is the frequency of the quartz crystal used in the PCF85263AT/AJ?
The quartz crystal frequency is 32.768 kHz. - How many independent alarms does the PCF85263AT/AJ support?
The PCF85263AT/AJ supports two independent alarms. - Does the PCF85263AT/AJ have interrupt signals?
Yes, it has two independent interrupt signals (INTA and INTB). - What is the power supply range for the PCF85263AT/AJ?
The power supply range is 1.0 V to 5.5 V (VDD) with battery backup (VBAT). - Is the PCF85263AT/AJ UL Recognized?
Yes, certain packages of the PCF85263AT/AJ are UL Recognized Components.
