RTC PCF8523 evaluation board OM13511
1. Introduction
The PCF8523 is a real-time clock based on an ultra-low power oscillator and using an
I
2
C-bus for interfacing. The OM13511 is the ideal evaluation/demo board to use during
the design phase of any project, just power and I
2
C-bus must be connected. If an SPI-
bus would be the preferred interface, the PCF2123 with demo board OM13512 could be
used for evaluation.
2. Key features
2.1 Demo board OM13511
The RTC PCF8523TS with I
2
C-bus is mounted together with a quartz crystal, a coin cell
lithium battery and the decoupling capacitors to buffer the supply voltage. All signals are
accessible on a row of pins, overcoming the need to build a test printed-circuit board
before the circuit can be evaluated or the functionality being tested together with the final
application.
Fig 1. OM13511 demo board
2.2 Real-time clock PCF8523
The PCF8523
• Has an ultra-low power consumption
• Provides time and calendar from seconds to years
UM10760 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2015. All rights reserved.
User manual Rev. 1 — 2 February 2015 3 of 13
