MC68HC908JL8 MOTOROLA [Motorola, Inc], MC68HC908JL8 Datasheet - Page 114

• Manufacturer Part Number: MC68HC908JL8
• Description: Motorola reserves the right to make changes without further notice to any products herein
• Manufacturer: MOTOROLA [Motorola, Inc]

Oscillator (OSC)
8.4 Internal Oscillator
8.5 I/O Signals
8.5.1 Crystal Amplifier Input Pin (OSC1)
Technical Data
114
NOTE:
The internal oscillator clock (ICLK) is a free running 50-kHz clock that
requires no external components. It is used as the reference clock input
to the computer operating properly (COP) module and the SIM.
The internal oscillator by default is always available and is free running
after POR or reset. It can be stopped in stop mode by setting the
STOP_ICLKDIS bit before executing the STOP instruction.
Figure 8-4
internal oscillator circuitry.
The internal oscillator is a free running oscillator and is available after
each POR or reset. It is turned-off in stop mode by setting the
STOP_ICLKDIS bit in CONFIG2 (see
(CONFIG2)).
The following paragraphs describe the oscillator I/O signals.
OSC1 pin is an input to the crystal oscillator amplifier or the input to the
RC oscillator circuit.
Freescale Semiconductor, Inc.
For More Information On This Product,
STOP_ICLKDIS
shows the logical representation of components of the
CONFIG2
Go to: www.freescale.com
Oscillator (OSC)
Figure 8-4. Internal Oscillator
From SIM
SIMOSCEN
5.5 Configuration Register 2
EN
To SIM and COP
OSCILLATOR
ICLK
INTERNAL
MC68HC908JL8
MOTOROLA
—
Rev. 2.0