MC9S08GT16 MOTOROLA [Motorola, Inc], MC9S08GT16 Datasheet - Page 101

• Manufacturer Part Number: MC9S08GT16
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

7.1.2
This is a high-level description only. Detailed descriptions of operating modes are contained in
Section 7.3, “Functional
7.2
7.2.1
Table 7-1
Freescale Semiconductor
•
•
•
•
•
Mode 1 — Off
The output clock, ICGOUT, is static. This mode may be entered when the STOP instruction is
executed.
Mode 2 — Self-clocked (SCM)
Default mode of operation that is entered out of reset. The ICG’s FLL is open loop and the digitally
controlled oscillator (DCO) is free running at a frequency set by the filter bits.
Mode 3 — FLL engaged internal (FEI)
In this mode, the ICG’s FLL is used to create frequencies that are programmable multiples of the
internal reference clock.
— FLL engaged internal unlocked is a transition state which occurs while the FLL is attempting
— FLL engaged internal locked is a state which occurs when the FLL detects that the DCO is
Mode 4 — FLL bypassed external (FBE)
In this mode, the ICG is configured to bypass the FLL and use an external clock as the clock source.
Mode 5 — FLL engaged external (FEE)
The ICG’s FLL is used to generate frequencies that are programmable multiples of the external
clock reference.
— FLL engaged external unlocked is a transition state which occurs while the FLL is attempting
— FLL engaged external locked is a state which occurs when the FLL detects that the DCO is
External Signal Description
shows the user-accessible signals available for the ICG.
Modes of Operation
to lock. The FLL DCO frequency is off target and the FLL is adjusting the DCO to match the
target frequency.
locked to a multiple of the internal reference.
to lock. The FLL DCO frequency is off target and the FLL is adjusting the DCO to match the
target frequency.
locked to a multiple of the internal reference.
Overview
Name
EXTAL
XTAL
Description."
MC9S08GB/GT Data Sheet, Rev. 2.3
External clock/oscillator input
Table 7-1. Signal Properties
Oscillator output
Function
Analog output
Reset State
Analog input
External Signal Description
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