MC9S08AW16CFUE Datasheet, PDF (21/324 Pages) Freescale Semiconductor, Inc – MC9S08AW60 Features

Table 1-3 lists the functional versions of the on-chip modules.
Table 1-3. Versions of On-Chip Modules
Module
Analog-to-Digital Converter
Internal Clock Generator
Inter-Integrated Circuit
(S08ADC10)
(S08ICG)
(S08IIC)
Keyboard Interrupt
Serial Communications Interface
Serial Peripheral Interface
(S08KBI)
(S08SCI)
(S08SPI)
Timer Pulse-Width Modulator
Central Processing Unit
Debug Module
(S08TPM)
(S08CPU)
(DBG)
Version
1
4
1
1
2
3
2
2
2
1.3 System Clock Distribution
SYSTEM
CONTROL
LOGIC
ICGERCLK
RTI
FFE
TPM1
TPM2
IIC1
SCI1
÷2
ICG
FIXED FREQ CLOCK (XCLK)
Chapter 1 Introduction
SCI2
SPI1
ICGOUT
÷2
ICGLCLK*
BUSCLK
CPU
BDC
ADC1
RAM
FLASH
* ICGLCLK is the alternate BDC clock source for the MC9S08AW60 Series.
ADC has min and max
frequency requirements.
See Chapter 14,
“Analog-to-Digital Converter
(S08ADC10V1) and
Appendix A, “Electrical
Characteristics and Timing
Specifications
Figure 1-2. System Clock Distribution Diagram
FLASH has frequency
requirements for program
and erase operation.
See Appendix A, “Electrical
Characteristics and Timing
Specifications.
Some of the modules inside the MCU have clock source choices. Figure 1-2 shows a simplified clock
connection diagram. The ICG supplies the clock sources:
• ICGOUT is an output of the ICG module. It is one of the following:
— The external crystal oscillator
— An external clock source
MC9S08AW60 Data Sheet, Rev 2
Freescale Semiconductor
21