Overview
The PCF85063AT/AAZ is a CMOS Real-Time Clock (RTC) and calendar device manufactured by NXP USA Inc. This component is optimized for low power consumption and features an integrated 32.768 kHz oscillator with selectable load capacitors. It provides a comprehensive set of time-keeping functions, including year, month, day, weekday, hours, minutes, and seconds. The device also includes an alarm function, countdown timer, and interrupt capabilities, making it versatile for various applications.
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: CL = 7 pF or CL = 12.5 pF |
| Package Types | SOT96-1, SOT1197-1, SSOP8 |
Key Features
- Provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal.
- Programmable clock output for peripheral devices.
- Alarm function and countdown timer.
- Minute and half minute interrupt capabilities.
- Oscillator stop detection function.
- Internal Power-On Reset.
- Programmable offset register for frequency adjustment.
- Low power consumption.
- 400 kHz two-line I2C-bus interface.
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 PCF85063AT/AAZ? The operating voltage range is from 0.9 V to 5.5 V.
- What is the typical current consumption of the PCF85063AT/AAZ? 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 frequencies can the programmable clock output provide? The programmable clock output can provide frequencies of 32.768 kHz, 16.384 kHz, 8.192 kHz, 4.096 kHz, 2.048 kHz, 1.024 kHz, and 1 Hz.
- Does the PCF85063AT/AAZ have an alarm function? Yes, it includes an alarm function and a countdown timer.
- What types of packages are available for the PCF85063AT/AAZ? The available package types are SOT96-1, SOT1197-1, and SSOP8.
- Can the oscillator frequency be adjusted? Yes, the device includes a programmable offset register for frequency adjustment.
- What are some common applications of the PCF85063AT/AAZ? Common applications include digital still cameras, digital video cameras, printers, copy machines, mobile equipment, and battery-powered devices.
- Does the PCF85063AT/AAZ support interrupt functions? Yes, it supports minute and half minute interrupt capabilities.
- How does the device handle oscillator stop detection? The device includes an oscillator stop detection function.
