Overview
The PCF85063ATT/AJ is a Tiny Real-Time Clock (RTC) and calendar device manufactured by NXP USA Inc. This CMOS-based RTC is optimized for low power consumption and features an I2C-bus interface for serial data transfer. It includes a 32.768 kHz quartz crystal oscillator and provides a range of functionalities such as alarm, countdown timer, and interrupt capabilities. The device is suitable for various applications requiring precise timekeeping and low power usage.
Key Specifications
| Parameter | 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 |
| Oscillator Frequency | 32.768 kHz |
| Programmable Clock Output | 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 | TSSOP8 |
| Minimum Order Quantity | 2500 |
Key Features
- Provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal.
- Low power consumption with typical current of 0.22 μA at VDD = 3.3 V and Tamb = 25 °C.
- 400 kHz two-line I2C-bus interface.
- Programmable clock output for peripheral devices.
- Selectable integrated oscillator load capacitors.
- Alarm function, countdown timer, and minute/half minute interrupt.
- Oscillator stop detection function and internal Power-On Reset.
- Programmable offset register for frequency adjustment.
Applications
- Digital still cameras.
- Digital video cameras.
- Printers.
- 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 is the maximum data rate of the I2C-bus interface?
The maximum data rate is 400 kbit/s. - What are the programmable clock output frequencies?
The programmable clock output frequencies are 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 an alarm function?
Yes, it includes an alarm function along with a countdown timer and minute/half minute interrupt. - What types of packages are available for the PCF85063ATT/AJ?
The device is available in TSSOP8, SO8, and HXSON10 packages. - Is the PCF85063ATT/AJ RoHS compliant?
Yes, the device is RoHS compliant. - What is the minimum order quantity for the PCF85063ATT/AJ?
The minimum order quantity is 2500. - Does the PCF85063ATT/AJ have oscillator stop detection and Power-On Reset?
Yes, it includes oscillator stop detection and internal Power-On Reset. - Can the frequency of the PCF85063ATT/AJ be adjusted?
Yes, the device has a programmable offset register for frequency adjustment.
