MC68HC908JK3EMP MOTOROLA [Motorola, Inc], MC68HC908JK3EMP Datasheet - Page 205

• Manufacturer Part Number: MC68HC908JK3EMP
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

18.11 3V Oscillator Characteristics
MC68H(R)C908JL3E/JK3E/JK1E
MOTOROLA
NOTES:
14
12
10
Crystal frequency, XTALCLK
RC oscillator frequency, RCCLK
External clock
Crystal load capacitance
Crystal fixed capacitance
Crystal tuning capacitance
Feedback bias resistor
Series resistor
RC oscillator external R
RC oscillator external C
1. No more than 10% duty cycle deviation from 50%.
2. Consult crystal vendor data sheet.
3. Not required for high frequency crystals.
8
6
4
2
0
reference frequency
0
Characteristic
Table 18-9. Oscillator Component Specifications (3V)
(2), (3)
10
Figure 18-2. RC vs. Frequency (3V @25°C)
(1)
(2)
—
(2)
(2)
Rev. 2.0
Resistor, R
20
Electrical Specifications
f
f
Symbol
OSCXCLK
OSCXCLK
f
EXT
RCCLK
R
C
R
R
C
C
C
EXT
EXT
30
L
1
2
B
S
(k Ω )
C
3V @ 25 ° C
EXT
Min
—
dc
—
—
—
—
—
—
2
= 10 pF
40
See
10 M Ω
2 × C
2 × C
Typ
Figure 18-2
10
—
—
—
8
8
L
L
50
V
Max
DD
3V Oscillator Characteristics
16
12
16
—
—
—
—
—
—
R
Electrical Specifications
EXT
OSC1
MHz
MHz
MHz
Unit
pF
Technical Data
MCU
C
EXT
205