1. General description
The PCF85063BTL is a CMOS
1
Real-Time Clock (RTC) and calendar optimized for low
power consumption. An offset register allows fine-tuning of the clock. All addresses and
data are transferred serially via a Serial Peripheral Interface (SPI-bus) with a maximum
data rate of 7 Mbit/s. The register address is incremented automatically after each written
or read data byte.
For a selection of NXP Real-Time Clocks, see Table 46 on page 49
.
2. Features and benefits
Provides year, month, day, weekday, hours, minutes, and seconds based on a
32.768 kHz quartz crystal
Clock operating voltage: 0.9 V to 5.5 V
Low current; typical 0.22 Aat V
DD
= 3.3 V and T
amb
=25C
3 line SPI-bus with a maximum data rate of 7 Mbit/s
Programmable clock output for peripheral devices (32.768 kHz, 16.384 kHz,
8.192 kHz, 4.096 kHz, 2.048 kHz, 1.024 kHz, and 1 Hz)
Selectable integrated oscillator load capacitors for C
L
=7pF or C
L
= 12.5 pF
Alarm function
Countdown timer
Minute and half minute interrupt
Oscillator stop detection function
Internal Power-On Reset (POR)
Programmable offset register for frequency adjustment
3. Applications
Digital still camera
Digital video camera
Printers
Copy machines
Mobile equipment
Battery powered devices
PCF85063BTL
Tiny Real-Time Clock/calendar with alarm function and
SPI-bus
Rev. 6 — 18 November 2015 Product data sheet
1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 21.
