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MC68HC908LJ24 Datasheet, PDF (442/464 Pages) Motorola, Inc – Microcontrollers | |||
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Freescale Semiconductor, Inc.
Electrical Specifications
24.11 3.3V Oscillator Characteristics
Table 24-9. 3.3V Oscillator Specifications
Characteristic
Internal oscillator clock frequency
Symbol
Min
fICLK
Typ
47 k(1)
Max Unit
Hz
External reference clock to OSC1(2)
fOSC
dc
â
16 M
Hz
Crystal reference frequency(3)
fXCLK
â
32.768 k
4.9152M Hz
Crystal load capacitance(4)
Crystal fixed capacitance
Crystal tuning capacitance
Feedback bias resistor
Series resistor(5)
CL
â
â
â
C1
â
2 Ã CL (27p)
â
F
C2
â
2 Ã CL (33p)
â
F
RB
â
20 M
â
â¦
RS
â
100 k
â
â¦
Notes:
1. Typical value reflect average measurements at midpoint of voltage range, 25 ÃC only. See Figure 24-1 for plot.
2. No more than 10% duty cycle deviation from 50%.
3. Fundamental mode crystals only.
4. Consult crystal manufacturerâs data.
5. Not Required for high frequency crystals.
65
â40 C
60
55
50
+25 C
45
40
+85 C
35
2
3
4
5
6
Supply Voltage, VDD (V)
Figure 24-1. Typical Internal Oscillator Frequency
Data Sheet
442
MC68HC908LJ24/LK24 â Rev. 2
Electrical Specifications
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA
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