mc9s08ac32 Freescale Semiconductor, Inc, mc9s08ac32 Datasheet - Page 22

• Manufacturer Part Number: mc9s08ac32
• Description: Hcs08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 1 Introduction
Table 1
1.3
Some of the modules inside the MCU have clock source choices.
connection diagram. The ICG supplies the clock sources:
22
•
ICGOUT is an output of the ICG module. It is one of the following:
— The external crystal oscillator
lists the functional versions of the on-chip modules.
ICG
System Clock Distribution
ICGERCLK
FFE
ICGLCLK*
ICGOUT
CPU
Cyclic Redundancy Check Generator
Analog-to-Digital Converter
Internal Clock Generator
Inter-Integrated Circuit
Keyboard Interrupt
Serial Communications Interface
Serial Peripheral Interface
Timer Pulse-Width Modulator
Central Processing Unit
Debug Module
÷
CONTROL
SYSTEM
2
LOGIC
÷
Figure 1-2. System Clock Distribution Diagram
2
Table 1. Versions of On-Chip Modules
XCLK**
MC9S08AC60 Series Data Sheet, Rev. 2
1 kHz
RTI
COP
BUSCLK
* ICGLCLK is the alternate BDC clock source for the MC9S08AC60 Series.
** Fixed frequency clock.
Module
BDC
TPM1
TPM1CLK
TPM2CLK
TPM2
(CRC)
(CPU)
(DBG)
(ADC)
(TPM)
(ICG)
(SCI)
(KBI)
(SPI)
(IIC)
TPM3
Figure 1-2
TPMCLK
Version
IIC1
ADC1
1
1
4
2
1
4
3
3
2
2
shows a simplified clock
SCI1
Freescale Semiconductor
RAM
SCI2
CRC
FLASH
SPI1