MC68HC908JK3EMP MOTOROLA [Motorola, Inc], MC68HC908JK3EMP Datasheet - Page 103
MC68HC908JK3EMP
Manufacturer Part Number
MC68HC908JK3EMP
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908JK3EMP.pdf
(226 pages)
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8.4 RC Oscillator (MC68HRC908JL3E/JK3E/JK1E)
MC68H(R)C908JL3E/JK3E/JK1E
MOTOROLA
The series resistor (R
oscillator guidelines and may not be required for all ranges of operation,
especially with high frequency crystals. Refer to the crystal
manufacturer’s data for more information.
The RC oscillator circuit is designed for use with external R and C to
provide a clock source with tolerance less than 10%.
In its typical configuration, the RC oscillator requires two external
components, one R and one C. Component values should have a
tolerance of 1% or less, to obtain a clock source with less than 10%
tolerance. The oscillator configuration uses two components:
From SIM
•
•
MCU
—
SIMOSCEN
C
R
Rev. 2.0
EXT
EXT
V
DD
Figure 8-2. RC Oscillator External Connections
EN
R
EXT
OSC1
Oscillator (OSC)
Oscillator
Ext-RC
S
) is included in the diagram to follow strict Pierce
C
EXT
RCCLK
PTA6/RCCLK (OSC2)
RC Oscillator (MC68HRC908JL3E/JK3E/JK1E)
See
Section 18.
0
1
2OSCOUT
for component value requirements.
To SIM
PTA6
I/O
÷ 2
OSCOUT
Oscillator (OSC)
To SIM
Technical Data
PTA6
PTA6EN
103
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