S9S08AW60 datasheet(21/324 Pages) FREESCALE

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Chapter 1 Introduction

MC9S08AW60 Data Sheet, Rev 2

Freescale Semiconductor

Table 1-3 lists the functional versions of the on-chip modules.

1.3

System Clock Distribution

Figure 1-2. System Clock Distribution Diagram

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

Table 1-3. Versions of On-Chip Modules

Module

Version

Analog-to-Digital Converter

(S08ADC10)

Internal Clock Generator

(S08ICG)

Inter-Integrated Circuit

(S08IIC)

Keyboard Interrupt

(S08KBI)

Serial Communications Interface

(S08SCI)

Serial Peripheral Interface

(S08SPI)

Timer Pulse-Width Modulator

(S08TPM)

Central Processing Unit

(S08CPU)

Debug Module

(DBG)

TPM1

TPM2

IIC1

SCI1

SCI2

SPI1

BDC

CPU

ADC1

RAM

FLASH

ICG

ICGOUT

÷2

FFE

SYSTEM

LOGIC

BUSCLK

ICGLCLK*

CONTROL

FIXED FREQ CLOCK (XCLK)

ICGERCLK

RTI

* ICGLCLK is the alternate BDC clock source for the MC9S08AW60 Series.

÷2

FLASH has frequency

requirements for program

and erase operation.

See Appendix A, “Electrical

Characteristics and Timing

Specifications.

ADC has min and max

frequency requirements.

See Chapter 14,

“Analog-to-Digital Converter

(S08ADC10V1) and

Appendix A, “Electrical

Characteristics and Timing

Specifications

S9S08AW60 Datasheet(PDF) 21 Page - Freescale Semiconductor, Inc

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