MC68HC08AZ60ACFU MOTOROLA [Motorola, Inc], MC68HC08AZ60ACFU Datasheet - Page 146
MC68HC08AZ60ACFU
Manufacturer Part Number
MC68HC08AZ60ACFU
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC08AZ60ACFU.pdf
(480 pages)
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Clock Generator Module (CGM)
Advance Information
146
These conditions apply when the PLL is in automatic bandwidth control
mode:
The PLL also can operate in manual mode (AUTO = 0). Manual mode is
used by systems that do not require an indicator of the lock condition for
proper operation. Such systems typically operate well below f
require fast startup. The following conditions apply when in manual
mode:
•
•
•
•
•
•
•
•
•
•
The ACQ bit (See 9.6.2 PLL Bandwidth Control Register.) is a
read-only indicator of the mode of the filter. See
Tracking Modes
The ACQ bit is set when the VCO frequency is within a certain
tolerance,
certain tolerance,
The LOCK bit is a read-only indicator of the locked state of the
PLL.
The LOCK bit is set when the VCO frequency is within a certain
tolerance,
certain tolerance,
CPU interrupts can occur if enabled (PLLIE = 1) when the PLL’s
lock condition changes, toggling the LOCK bit. See
Register
ACQ is a writable control bit that controls the mode of the filter.
Before turning on the PLL in manual mode, the ACQ bit must be
clear.
Before entering tracking mode (ACQ = 1), software must wait a
given time, t
turning on the PLL by setting PLLON in the PLL control register
(PCTL).
Software must wait a given time, t
before selecting the PLL as the clock source to CGMOUT
(BCS = 1).
The LOCK bit is disabled.
CPU interrupts from the CGM are disabled.
Clock Generator Module (CGM)
on page 153.
Lock
trk
acq
, and is cleared when the VCO frequency is out of a
(see
, and is cleared when the VCO frequency is out of a
on page 145.
unt
unl
Electrical Specifications
. See
. See
Electrical Specifications
Electrical Specifications
al
, after entering tracking mode
MC68HC08AZ60A — Rev 0.0
on page 445), after
Acquisition and
PLL Control
on page 445.
on page 445.
busmax
MOTOROLA
and
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