SA1110 Datasheet, PDF (402/406 Pages) Intel Corporation – Intel StrongARM SA-1110 Microprocessor

32.768–KHz Oscillator Specifications
Specification
Resonance Frequency (Fs)
Quality Factor (Q)
Motional Capacitance (Cm)
Motional Resistance (Rm)
Shunt Capacitance (Co)
Load Capacitance (Cl)
Drive Level
Crystal Type
Minimum
Typical
Maximum
Unit
—
32768
—
Hz
40K
80K
200K
—
2
3
4
fF
—
—
50K
W
0.9
—
2
pF
10
12.5
25
pF
—
—
1
µW
Tuning fork (X+5^o or X+2^o cut)
The following values are not required for the crystal oscillator to function, but they directly affect
the performance of the oscillator in the system because they determine the accuracy of the crystal
itself. The values given represent those seen on typical crystals used for time keeping, and are
provided for information only.
Specification
Frequency Tolerance
Parabolic Curvature
Turnover Temperature
Temperature Range
Aging
Minimum
+/-5
—
20
0
—
Typical
+/-20
-0.042
25
—
+/-3
Maximum
+/-30
-0.05
30
60
+/-5
Unit
ppm
ppm/ ^oC
o_C
o_C
ppm/year
C-4
SA-1110 Developer’s Manual