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HCS08 Fiches technique(PDF) 86 Page - Motorola, Inc

No de pièce HCS08
Description  Microcontrollers
PDF  290 Pages
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Fabricant  MOTOROLA [Motorola, Inc]
Site Internet  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

HCS08 Fiches technique(HTML) 86 Page - Motorola, Inc

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Internal Clock Generator (ICG) Module
MC9S08GB/GT
86
MOTOROLA
6.2.2 Detailed Signal Descriptions
This section describes each pin signal in detail.
6.2.2.1 EXTAL— External Reference Clock / Oscillator Input
If the first write to the ICG control register 1 selected FLL engaged external or FLL bypassed modes, this
signal is the analog external/reference clock or the input of the oscillator circuit. If the first write to the
ICG control register 1 selected FLL engaged internal or self-clocked modes, this signal has no effect on
the ICG.
6.2.2.2 XTAL— Oscillator Output
If the first write to the ICG control register 1 selected FLL engaged external or FLL bypassed modes using
a crystal/resonator reference, this signal is the analog output of the oscillator amplifier circuit. In all other
cases, this signal has no effect on the ICG.
6.2.3 External Clock Connections
If an external clock is used, then the pins are connected as shown below.
Figure 6-4 External Clock Connections
Table 6-1 Signal Properties
Name
Function
Reset State
EXTAL
External clock/oscillator input
Analog input
XTAL
Oscillator output
Analog output
ICG
XTAL
EXTAL
VSS
CLOCK INPUT
NOT CONNECTED



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