Overview
The PCF85263ATT/AJ is a CMOS Real-Time Clock (RTC) and calendar IC produced by NXP Semiconductors. This device is optimized for low power consumption and features automatic switching to battery backup on main power loss. It is designed to provide accurate timekeeping and various additional functions such as alarms, timestamp inputs, and a stop-watch mode. The PCF85263ATT/AJ is packaged in an 8-pin TSSOP (Thin Shrink Small Outline Package) and is suitable for a wide range of applications requiring precise time and date tracking.
Key Specifications
| Parameter | Description |
|---|---|
| Package Type | TSSOP8 (8-pin Thin Shrink Small Outline Package) |
| Interface | I2C-bus with a maximum data rate of 400 kbit/s |
| Quartz Crystal Frequency | 32.768 kHz |
| Time 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 |
| Battery Backup | Automatic switching to battery on main power loss |
| Operating Temperature | -40°C to +85°C |
| Oscillator | On-chip 32.768 kHz oscillator with integrated capacitors |
Key Features
- Low power consumption
- Automatic switching to battery backup on main power loss
- Stop-watch mode for elapsed time counting
- Two independent alarms
- Two independent interrupt signals (INTA and INTB)
- I2C-bus interface with a maximum data rate of 400 kbit/s
- Quartz crystal calibration
- Timestamp input and three time log registers
- Clock output and configurable interrupt outputs
Applications
- Network powered devices
- Battery backed up systems
- Data loggers
- Digital voice recorders
- Mobile equipment
- Accurate high duration timers
Q & A
- What is the PCF85263ATT/AJ? The PCF85263ATT/AJ is a CMOS Real-Time Clock (RTC) and calendar IC produced by NXP Semiconductors.
- What package type does the PCF85263ATT/AJ come in? It is packaged in an 8-pin TSSOP (Thin Shrink Small Outline Package).
- What is the interface type of the PCF85263ATT/AJ? It uses an I2C-bus interface with a maximum data rate of 400 kbit/s.
- What is the quartz crystal frequency used in the PCF85263ATT/AJ? The quartz crystal frequency is 32.768 kHz.
- Does the PCF85263ATT/AJ have alarm functions? Yes, it has two independent alarms.
- What is the stop-watch mode capability of the PCF85263ATT/AJ? It can count elapsed time from 100th seconds to 999,999 hours.
- Does the PCF85263ATT/AJ support battery backup? Yes, it automatically switches to battery backup on main power loss.
- What is the operating temperature range of the PCF85263ATT/AJ? The operating temperature range is -40°C to +85°C.
- What are some common applications of the PCF85263ATT/AJ? Common applications include network powered devices, battery backed up systems, data loggers, digital voice recorders, mobile equipment, and accurate high duration timers.
- Does the PCF85263ATT/AJ have timestamp input capabilities? Yes, it has a timestamp input and three time log registers.
