Overview
The PCF85063ATT/AJ, produced by NXP USA Inc., is a highly integrated CMOS Real-Time Clock (RTC) and calendar module designed for low power consumption. This device is optimized for use in various applications requiring precise timekeeping and alarm functions. It features an on-chip 32.768 kHz oscillator with integrated load capacitors, an I2C-bus interface, and multiple programmable clock outputs.
Key Specifications
| Specification | Value |
|---|---|
| Operating Voltage | 0.9 V to 5.5 V |
| Current Consumption | Typical 0.22 μA at VDD = 3.3 V and Tamb = 25 °C |
| I2C-Bus Interface | 400 kHz, two-line bidirectional |
| Programmable Clock Outputs | 32.768 kHz, 16.384 kHz, 8.192 kHz, 4.096 kHz, 2.048 kHz, 1.024 kHz, and 1 Hz |
| Integrated Oscillator Load Capacitors | Selectable for CL = 7 pF or CL = 12.5 pF |
| Package Type | 8-TSSOP |
| Minimum Order Quantity | 2500 pieces |
Key Features
- Provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal.
- Programmable offset register for frequency adjustment.
- Alarm function and countdown timer.
- Minute and half minute interrupt capabilities.
- Oscillator stop detection function.
- Internal Power-On Reset.
- Auto-incrementing register address for I2C-bus interface.
Applications
- Digital still cameras and video cameras.
- Printers and copy machines.
- Mobile equipment.
- Battery-powered devices.
Q & A
- What is the operating voltage range of the PCF85063ATT/AJ?
The operating voltage range is from 0.9 V to 5.5 V. - What is the typical current consumption of the PCF85063ATT/AJ?
The typical current consumption is 0.22 μA at VDD = 3.3 V and Tamb = 25 °C. - What type of interface does the PCF85063ATT/AJ use?
The device uses a 400 kHz, two-line bidirectional I2C-bus interface. - What are the programmable clock output frequencies of the PCF85063ATT/AJ?
The programmable clock outputs include 32.768 kHz, 16.384 kHz, 8.192 kHz, 4.096 kHz, 2.048 kHz, 1.024 kHz, and 1 Hz. - Does the PCF85063ATT/AJ have integrated oscillator load capacitors?
Yes, the device has selectable integrated oscillator load capacitors for CL = 7 pF or CL = 12.5 pF. - What is the package type of the PCF85063ATT/AJ?
The package type is 8-TSSOP. - What are the key features of the alarm function in the PCF85063ATT/AJ?
The alarm function includes programmable alarms and a countdown timer with minute and half minute interrupt capabilities. - Is the PCF85063ATT/AJ suitable for battery-powered devices?
Yes, it is optimized for low power consumption, making it suitable for battery-powered devices. - How does the auto-incrementing register address work in the PCF85063ATT/AJ?
The register address increments automatically after each read or write of a data byte up to register 11h, then wraps around to address 00h. - What are some common applications of the PCF85063ATT/AJ?
Common applications include digital still cameras, digital video cameras, printers, copy machines, and mobile equipment.
