參數(shù)資料
型號: LH7A400N0C000
廠商: Sharp Corporation
英文描述: 32-Bit System-on-Chip
中文描述: 32位系統(tǒng)級芯片
文件頁數(shù): 48/53頁
文件大?。?/td> 446K
代理商: LH7A400N0C000
LH7A400
32-Bit System-on-Chip
48
12/8/03
Preliminary Data Sheet
Figure 22. 14.7456 MHz External Oscillator Components and Schematic
ENABLE
XTALIN
XTALOUT
GND
NOTES:
1. Y1 is a parallel-resonant type crystal. (See table)
2. The nominal values for C1 and C2 shown are for
a crystal specified at 18 pF load capacitance (CL).
3. The values for C1 and C2 are dependent upon
the cystal's specified load capacitance and PCB
stray capacitance.
4. R1 must be in the circuit.
5. Ground connections should be short and return
to the ground plane which is connected to the
processor's core ground pins.
6. Tolerance for R1, C1, C2 is
5%.
GND
14.7456 MHz
1 M
LH7A400-188
C1
18 pF
C2
22 pF
R1
Y1
INTERNAL TO
THE LH7A400
EXTERNAL TO
THE LH7A400
PARAMETER
DESCRIPTION
14.7456 MHz Crystal
Tolerance
Stability
Aging
Load Capacitance
ESR (MAX.)
Drive Level
Recommended Part
(AT-Cut) Parallel Mode
±50 ppm
±100 ppm
±5 ppm
18 pF
40
100 μW (MAX.)
MTRON SX2050 or equivalent
RECOMMENDED CRYSTAL SPECIFICATIONS
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