MC908AZ60AVFU Freescale Semiconductor, MC908AZ60AVFU Datasheet - Page 127
MC908AZ60AVFU
Manufacturer Part Number
MC908AZ60AVFU
Description
IC MCU 61K FLASH 8.4MHZ 64-QFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908AZ60ACFUER.pdf
(414 pages)
Specifications of MC908AZ60AVFU
Core Processor
HC08
Core Size
8-Bit
Speed
8.4MHz
Connectivity
CAN, SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
52
Program Memory Size
60KB (60K x 8)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 15x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
64-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Chapter 10
Clock Generator Module (CGM)
10.1 Introduction
The CGM generates the crystal clock signal, CGMXCLK, which operates at the frequency of the crystal.
The CGM also generates the base clock signal, CGMOUT, from which the system clocks are derived.
CGMOUT is based on either the crystal clock divided by two or the phase-locked loop (PLL) clock,
CGMVCLK, divided by two. The PLL is a frequency generator designed for use with 1-MHz to 8-MHz
crystals or ceramic resonators. The PLL can generate an 8-MHz bus frequency without using high
frequency crystals.
10.2 Features
Features of the CGM include:
10.3 Functional Description
The CGM consists of three major submodules:
Figure 10-1
Freescale Semiconductor
•
•
•
•
•
•
•
•
Phase-Locked Loop with Output Frequency in Integer Multiples of the Crystal Reference
Programmable Hardware Voltage-Controlled Oscillator (VCO) for Low-Jitter Operation
Automatic Bandwidth Control Mode for Low-Jitter Operation
Automatic Frequency Lock Detector
CPU Interrupt on Entry or Exit from Locked Condition
Crystal oscillator circuit — The crystal oscillator circuit generates the constant crystal frequency
clock, CGMXCLK.
Phase-locked loop (PLL) — The PLL generates the programmable VCO frequency clock
CGMVCLK.
Base clock selector circuit — This software-controlled circuit selects either CGMXCLK divided by
two or the VCO clock, CGMVCLK, divided by two as the base clock, CGMOUT. The system clocks
are derived from CGMOUT.
shows the structure of the CGM.
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
127
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