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| Z8F042ASJ020EG2156 Datasheet, PDF (215/280 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers | |||
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Z8 Encore! XP® F082A Series
Product Specification
200
Table 114. Recommended Crystal Oscillator Specifications
Parameter
Value
Frequency
20
Resonance
Parallel
Mode
Fundamental
Series Resistance (RS)
60
Load Capacitance (CL)
30
Shunt Capacitance (C0)
7
Drive Level
1
Units
MHz
W
pF
pF
mW
Comments
Maximum
Maximum
Maximum
Maximum
Table 115. Transconductance Values for Low, Medium and High Gain Operating Modes
Mode
Crystal
Frequency
Range
Function
Transconductance (mA/V)
(Use this range
for calculations)
Low Gain*
32kHzâ1MHz Low Power/Frequency Applications
0.02 0.04 0.09
Medium Gain* 0.5MHzâ10MHz Medium Power/Frequency Applications 0.84
1.7
3.1
High Gain* 8MHzâ20MHz High Power/Frequency Applications
1.1
2.3
4.2
Note: *Printed circuit board layouts must not add more than 4pF of stray capacitance to either the XIN or XOUT pins.
if no oscillation occurs, reduce the values of the capacitors C1 and C2 to decrease the loading.
PS022828-0413
PRELIMINARY
Crystal Oscillator Operation
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