MPC903 Ver la hoja de datos (PDF) - Motorola => Freescale
Número de pieza
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Fabricante
MPC903 Datasheet PDF : 6 Pages
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MPC903 MPC904 MPC905
AC CHARACTERISTICS (TA = 0–70°C; VDD = 3.3V ±0.3V)
Symbol
Characteristic
Min
Typ
Fmax
tpw
Maximum Operating
Frequency
Output Pulse Width
Using External Crystal
Using External Clock Source
HIGH (Above 2.0V)
LOW (Below 0.8V)
HIGH (Above 2.0V)
LOW (Below 0.8V)
TBD
DC
0.40T1
0.40T1
0.45T2
0.45T2
tper
Output Period
tos
Output-to-Output Skew
T – 400ps
Rising Edges
Falling Edges
tr, tf
Rise/Fall Times (Slew Rate)
1
Max
50
100
0.60T1
0.60T1
0.55T2
0.55T2
400
500
4
tEN
Enable Time
Enable1
5
Enable2
4
tDIS
Disable Time
Enable1
4
Enable2
4
Aosc
XTAL_IN to XTAL_OUT Oscillator Gain
6
Phase
Loop Phase Shift Modulo 360° +
30
1. Assuming input duty cycle specs from Recommended Operationg Conditions table are met.
2. Assuming external crystal or 50% duty cycle external reference is used.
Unit
MHz
Condition
T = Periods
T = Desired Period
ps
V/ns
ms
Cycles
Cycles
Series Terminated
Transmission Lines
db
Degrees
Pin 16
Pin 1
100Ω
Y1
33.3333MHz
C1 10pF C3 16pF
Pin 16
Y1
Pin 1
+ Ǹ fFUND
1
2p LTRAP CTRAP
CTRAP
11.1111MHz
C1 10pF C3 16pF
LTRAP
Figure 1. Crystal Oscillator Interface
(Fundamental)
Figure 2. Crystal Oscillator Interface
(3rd Overtone)
Table 1. Crystal Specifications
Parameter
Crystal Cut
Resonance
Frequency Tolerance
Frequency/Temperature Stability
Operating Range
Shunt Capacitance
Equivalent Series Resistance (ESR)
Correlation Drive Level
Aging
Value
Fundamental AT Cut
Parallel Resonance*
±75ppm at 25°C
±150pm 0 to 70°C
0 to 70°C
5–7pF
50 to 80Ω
100µW
5ppm/Yr (First 3 Years)
TIMING SOLUTIONS
3
BR1333 — REV 5
MOTOROLA
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