MC68HC908JL8 MOTOROLA [Motorola, Inc], MC68HC908JL8 Datasheet - Page 272

• Manufacturer Part Number: MC68HC908JL8
• Description: Motorola reserves the right to make changes without further notice to any products herein
• Manufacturer: MOTOROLA [Motorola, Inc]

Electrical Specifications
19.8 5V Oscillator Characteristics
Technical Data
272
NOTES:
Internal oscillator clock frequency
External reference clock to OSC1
Crystal reference frequency
Crystal load capacitance
Crystal fixed capacitance
Crystal tuning capacitance
Feedback bias resistor
Series resistor
External RC clock frequency
RC oscillator external R
RC oscillator external C
1. Typical value reflect average measurements at midpoint of voltage range, 25 °C only. See
2. No more than 10% duty cycle deviation from 50%.
3. Fundamental mode crystals only.
4. Consult crystal vendor data sheet.
5. Not required for high frequency crystals.
14
12
10
8
6
4
2
0
0
(3), (5)
Characteristic
10
(4)
(3)
(3)
(3)
Figure 19-1. RC vs. Frequency (5V @25°C)
Table 19-6. Oscillator Specifications (5V)
Freescale Semiconductor, Inc.
For More Information On This Product,
(2)
Resistor, R
20
Go to: www.freescale.com
Electrical Specifications
EXT
f
30
Symbol
XTALCLK
f
(k Ω )
RCCLK
R
C
f
f
ICLK
OSC
R
R
C
C
C
EXT
EXT
L
1
2
B
S
C
5V @ 25 ° C
EXT
= 10 pF
40
Min
2M
dc
—
—
—
—
—
—
See
50
Figure 19-1
10 M Ω
50k
2 × C
2 × C
Typ
—
—
—
—
—
10
(1)
V
L
L
DD
Figure 19-3
MC68HC908JL8
R
EXT
32M
32M
12M
Max
—
—
—
—
—
—
OSC1
for plot.
MCU
MOTOROLA
C
EXT
—
Unit
Rev. 2.0
Hz
Hz
Hz
Hz
pF
Ω