MC68HC908QY2 MOTOROLA [Motorola, Inc], MC68HC908QY2 Datasheet - Page 107

• Manufacturer Part Number: MC68HC908QY2
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

8.5 Oscillator Module Signals
8.5.1 Crystal Amplifier Input Pin (OSC1)
MOTOROLA
MC68HC908QY4•MC68HC908QT4•MC68HC908QY2•MC68HC908QT2•MC68HC908QY1•MC68HC908QT1
The following paragraphs describe the signals that are inputs to and
outputs from the oscillator module.
The OSC1 pin is either an input to the crystal oscillator amplifier, an input
to the RC oscillator circuit, or an external clock source.
For the internal oscillator configuration, the OSC1 pin can assume other
functions according to
FROM SIM
MCU
SIMOSCEN
V
DD
Figure 8-2. RC Oscillator External Connections
Oscillator Module (OSC)
EN
R
EXT
EXTERNAL RC
OSC1
OSCILLATOR
Table 1-3. Function Priority in Shared
INTCLK
RCCLK
PTA4/BUSCLKX4 (OSC2)
See
for component value requirements.
Section 18. Electrical Specifications
0
1
1
0
OSCRCOPT
TO SIM
PTA4
Oscillator Module Signals
BUSCLKX4
I/O
Oscillator Module (OSC)
÷ 2
TO SIM
BUSCLKX2
PTA4
OSC2EN
Pins.
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