User manual for I²C-bus RTC demo board OM13515
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2014. All rights reserved.
1. Introduction
The PCx85063 are a family of CMOS Real-Time Clocks (RTC) and calendar optimized
for low power consumption. Different features sets are available.
The OM13515 is the ideal evaluation/demo board to use in the design phase of any
project, just power and I
2
C-bus must be applied.
Separate demo boards and user manuals are available for
RTC PCF85063TP/PCF85063ATL – OM11059A and UM11698
RTC with SPI-bus PCF85063BTL – OM11059 and UM10699
2. Key features
There are four RTC variants of the PCF85063x RTC with I
2
C-bus:
PCF85063AT, PCF85063ATT – enhanced functionality with I
2
C-bus interface
PCA85063ATT – enhanced functionality with I
2
C-bus interface AEC-Q100 qualified
automotive grade
PCF85063ATL – enhanced functionality with I
2
C-bus interface with clock enable input
PCF85063TP – basic functionality with I
2
C-bus interface
2.1 PCx85063AT, PCF85063ATT
The PCx85063A 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:
− PCF85063AT: SO8
− PCF85063ATT: TSSOP8
− PCA85063ATT: TSSOP8, automotive grade, −40 °C to +105 °C
• Alarm control
• Timer
• WatchDog
• Interrupt:
− every 30 s or 60 s
− alarm
− timer
− WatchDog
• Interface: 400 kHz I
2
C-bus
