LH79520_N NXP Semiconductors, LH79520_N Datasheet - Page 52
LH79520_N
Manufacturer Part Number
LH79520_N
Description
The LH79520, powered by an ARM720T, is a completeSystem-on-Chip with a high level of integration tosatisfy a wide range of requirements and expectations
Manufacturer
NXP Semiconductors
Datasheet
1.LH79520_N.pdf
(59 pages)
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LH79520
52
NOTES:
1. Y1 is a parallel-resonant type crystal. (See table)
2. The nominal values for C1 and C2 shown are for
3. The values for C1 and C2 are dependent upon
4. R1 must be in the circuit.
5. Ground connections should be short and return
6. Tolerance for R1, C1, C2 is ≤ 5%.
a crystal specified at 18 pF load capacitance (CL).
the cystal's specified load capacitance and PCB
stray capacitance.
to the ground plane which is connected to the
processor's core ground pins.
Figure 34. Suggested External Components, 14.7456 MHz Oscillator
INTERNAL TO
THE LH79520
EXTERNAL TO
THE LH79520
Rev. 01 — 16 July 2007
NXP Semiconductors
ENABLE
XTALIN
RECOMMENDED CRYSTAL SPECIFICATIONS
PARAMETER
14.7456 MHz Crystal
Tolerance
Stability
Aging
Load Capacitance
ESR (MAX.)
Drive Level
Recommended Part
C1
18 pF
GND
14.7456 MHz
1 MΩ
R1
Y1
DESCRIPTION
(AT-Cut) Parallel Mode
±50 ppm
±100 ppm
±5 ppm
18 pF
40 Ω
100 µW (MAX.)
MTRON SX2050 or equivalent
XTALOUT
C2
22 pF
GND
Preliminary data sheet
System-on-Chip
79520-173
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