MC68HC908JG16FA MOTOROLA [Motorola, Inc], MC68HC908JG16FA Datasheet - Page 93

• Manufacturer Part Number: MC68HC908JG16FA
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

7.4 I/O Signals
7.4.1 Crystal Amplifier Input Pin (OSC1)
7.4.2 Crystal Amplifier Output Pin (OSC1)
7.4.3 Oscillator Enable Signal (SIMOSCEN)
7.4.4 Crystal Output Frequency Signal (OSCXCLK)
7.4.5 Clock Doubler Out (OSCDCLK)
MC68HC908JG16
MOTOROLA
—
Rev. 1.0
The following paragraphs describe the oscillator input/output (I/O)
signals.
The OSC1 pin is an input to the crystal oscillator amplifier.
The OSC2 pin is the output of the crystal oscillator inverting amplifier.
The SIMOSCEN signal comes from the system integration module (SIM)
and enables the oscillator.
OSCXCLK is the crystal oscillator output signal. It runs at the full speed
of the crystal (f
Figure 7-1
OSC2 and may not represent the actual circuitry. The duty cycle of
OSCXCLK is unknown and may depend on the crystal and other
external factors. Also, the frequency and amplitude of OSCXCLK can be
unstable at startup.
OSCDCLK is the clock doubler output signal. It runs at twice the speed
of the crystal (f
Freescale Semiconductor, Inc.
For More Information On This Product,
shows only the logical relation of OSCXCLK to OSC1 and
Go to: www.freescale.com
XCLK
XCLK
Oscillator (OSC)
) and comes directly from the crystal oscillator circuit.
) and comes from the clock doubler circuit.
Oscillator (OSC)
Technical Data
I/O Signals
93