NXP Semiconductors
UM10699
User manual for SPI-bus RTC demoboard OM11059
UM10699
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© NXP B.V. 2013. All rights reserved.
User manual
Rev. 1 — 04 April 2013
3 of 12
1. Introduction
The PCF85063x are a family of CMOS
Real-Time Clocks (RTC) and calendar optimized
for low power consumption. Different features sets are available.
The OM11059 is the ideal evaluation/demo board to use in the design phase of any
project, just power and SPI-bus must be hooked up.
A separate demoboard and a user manual are available for the I
2
C-bus RTCs
PCF85063ATL and PCF85063TP: OM11059A and UM10698.
2. Key features
The RTC PCF85063BTL with SPI-bus is mounted together with a quartz crystal and the
blocking capacitor, buffering the supply voltage.
2.1 PCF85063BTL
The RTC PCF85063BTL is a Real-Time Clock with very small form factor, counting
seconds, minutes, hours, days, weekdays, months, and years.
Electronic oscillator tuning
RAM: 1 Byte
Package: HXSON10 package: 2.6 x 2.6 x 0.5 mm
Alarm control
Timer
Interrupt: every 30 s or 60 s, alarm, timer
Interface: SPI-bus, up to 8 MHz
Clock out: enabled by pin or by software
Fig 1.
Block diagram of the PCF85063BTL RTC