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| MC68HC908AZ60 Datasheet, PDF (445/480 Pages) Motorola, Inc – HCMOS Microcontroller Unit | |||
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Specifications
Electrical Specifications
CGM Operating Conditions
Characteristic
Symbol Min
Typ
Max
Comments
Operating Voltage
Crystal Reference Frequency
Module Crystal Reference
Frequency
Range Nom. Multiplier (MHz)
VCO Center-of-Range Frequency
(MHz)
VDD
fRCLK
fXCLK
fNOM
fVRS
4.5 V
1
â
4.9152 MHz
â
4.9152 MHz
â
4.9152
4.9152
â
5.5 V
16
â
â
(1)
Same Frequency as
fRCLK
4.5â5.5 V, VDD only
4.5â5.5 V, VDD only
VCO Operating Frequency (MHZ)
fVCLK
4.9152
â
32.0
1. fVRS is a nominal value described and mandated as an example in the CGM module section for the desired VCO operating
frequency, fVCLK.
CGM Component Information
Description
Crystal Load Capacitance
Symbol Min
CL
â
Crystal Fixed Capacitance
C1
â
Crystal Tuning Capacitance
Filter Capacitor Multiply Factor
C2
â
CFACT
Filter Capacitor
CF
â
Bypass Capacitor
CBYP
â
Typ
â
2 x CL
2 x CL
0.0154
CFACT x
(VDDA/
fXCLK)
0.1 µF
Max
â
â
â
â
â
Comments
Consult Crystal
Manufacturerâs Data
Consult Crystal
Manufacturerâs Data
Consult Crystal
Manufacturerâs Data
F/s V
See External Filter
Capacitor Pin
(CGMXFC) on page
139
CBYP must provide
low AC impedance
from f = fXCLK/100 to
100 x fVCLK, so series
resistance must be
considered.
11-specs
MOTOROLA
Specifications
MC68HC908AZ60 â Rev 2.0
443
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