參數(shù)資料
型號(hào)： LH75401N0Q100C0
廠商： NXP Semiconductors N.V.
元件分類： 數(shù)學(xué)處理器
英文描述： System-on-Chip
封裝： LH75401N0Q100C0<SOT486-1 (LQFP144)|<<http://www.nxp.com/packages/SOT486-1.html<1<Always Pb-free,;LH75411N0Q100C0<SOT486-1 (LQFP144)|<<http://www.nxp.com/packages/SOT486-1
文件頁數(shù)： 55/63頁
文件大小： 665K
代理商： LH75401N0Q100C0
System-on-Chip
LH75401/LH75411
Preliminary data sheet
Rev. 01
—
16 July 2007
55
NXP Semiconductors
SUGGESTED EXTERNAL COMPONENTS
Figure 21 shows the suggested external compo-
nents for the 32.768 kHz crystal circuit to be used with
the NXP LH75401/LH75411. The NAND gate repre-
sents the logic inside the SoC. See the chart for crys-
tal specifics.
Figure 22 shows the suggested external compo-
nents for the 14.7456 MHz crystal circuit to be used
with the NXP LH75401/LH75411. The NAND gate rep-
resents the logic inside the SoC. See the chart for crys-
tal specifics.
Figure 21. Suggested External Components, 32.768 kHz Oscillator
ENABLE
XTAL32IN
XTAL32OUT
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 12.5 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
32.768 kHz
18 M
LH754xx-101
PARAMETER
DESCRIPTION
32.768 kHz Crystal
Tolerance
Aging
Load Capacitance
ESR (MAX.)
Drive Level
Recommended Part
Parallel Mode
±30 ppm
±3 ppm
12.5 pF
50 k
1.0 μW (MAX.)
MTRON SX1555 or equivalent
C1
15 pF
C2
18 pF
R1
Y1
RECOMMENDED CRYSTAL SPECIFICATIONS
INTERNAL TO THE
LH75400, LH75401,
LH75410, LH75411
EXTERNAL TO THE
LH75400, LH75401,
LH75410, LH75411
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