MC9RS08KA2 Datasheet, PDF (16/132 Pages) Freescale Semiconductor, Inc – Microcontrollers

Chapter 1 MC9RS08KA2 Series Device Overview
Table 1-1 provides the functional versions of the on-chip modules.
Table 1-1. Block Versions
Module
Analog Comparator (ACMP)
Keyboard Interrupt (KBI)
Modulo Timer (MTIM)
Internal Clock Source (ICS)
1.3 System Clock Distribution
Version
1
1
1
1
SYSTEM CONTROL LOGIC
RTICLKS
1-kHz
ICSIRCLK
÷32
RTI
ICSFFCLK
ICS
FIXED CLOCK (XCLK)
ICSOUT
÷2 ^{BUS CLOCK}
TCLK
MTIM
COP
CPU
BDC
FLASH
Figure 1-2. System Clock Distribution Diagram
Figure 1-2 shows a simplified clock connection diagram for the MCU. The bus clock frequency is half of
the ICS output frequency and is used by all of the internal modules.
MC9RS08KA2 Series Data Sheet, Rev. 2
16
Freescale Semiconductor