MAS 35x9F
DATA SHEET
Table 4–2: Reference Frequency Generation and Crystal Recommendation
Symbol
External Clock Input Recommendations
Clock frequency
Parameter
Pin Name
Min.
Typ.
Max.
Unit
f
XTI, XTO
13.00
0.7
18.432
20.00
1.05
MHz
CLK
V
Clockamplitude of external clock XTI
fed into XTI at V = 2.2 V
V
PP
CLKI
AVDD
Clockamplitude of external clock
fed into XTI at V = 2.7 V
0.55
0.45
1.25
0.75
0.55
45
1.5
1.75
2.2
2.7
3.3
55
AVDD
Clockamplitude of external clock
fed into XTI at V = 3.3 V
AVDD
Clockamplitude of external clock XTO
fed into XTO at V = 2.2 V
AVDD
Clockamplitude of external clock
fed into XTO at V = 2.7 V
AVDD
Clockamplitude of external clock
fed into XTO at V
= 3.3 V
AVDD
Duty cycle
XTI, XTO
XTI, XTO
50
%
Crystal Recommendations
Load resonance frequency at
f
18.432
MHz
ppm
ppm
P
C = 20 pF
I
∆f/f
∆f/f
Accuracy of frequency adjust-
ment
−50
−50
50
50
S
Frequency variation vs. temper-
ature
S
R
C
Equivalent series resistance
Shunt (parallel) capacitance
12
3
30
5
Ω
EQ
0
pF
68
June 30, 2004; 6251-505-1DS
Micronas
MICRONAS [ MICRONAS ]
