MC9S08DN60 Datasheet, PDF (249/354 Pages) Freescale Semiconductor, Inc – Microcontrollers

Chapter 14
Real-Time Counter (S08RTCV1)
14.1 Introduction
The RTC module consists of one 8-bit counter, one 8-bit comparator, several binary-based and
decimal-based prescaler dividers, three clock sources, and one programmable periodic interrupt. This
module can be used for time-of-day, calendar or any task scheduling functions. It can also serve as a cyclic
wake up from low power modes without the need of external components.
All devices in the MC9S08DN60 Series feature the RTC.
14.1.1 RTC Clock Signal Names
References to ERCLK and IRCLK in this chapter correspond to signals MCGERCLK and MCGIRCLK,
respectively.
MC9S08DN60 Series Data Sheet, Rev 2
Freescale Semiconductor
249