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參數(shù)資料
| 型號： | M34559G6FP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP52 |
| 封裝： | 10 X 10 MM, 0.65 MM PITCH, PLASTIC, LQFP-52 |
| 文件頁數(shù)： | 20/93頁 |
| 文件大?。?/td> | 1810K |
| 代理商： | M34559G6FP |
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CLRC663
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Preliminary data sheet
COMPANY PUBLIC
Rev. 3.1 — 26 September 2011
171131
116 of 126
NXP Semiconductors
CLRC663
Contactless reader IC
23.1.4 Antenna coil
The precise calculation of the antenna coils’ inductance is not practicable but the
inductance can be estimated using the following formula. We recommend designing an
antenna either with a circular or rectangular shape.
(4)
I1 - Length in cm of one turn of the conductor loop
D1 - Diameter of the wire or width of the PCB conductor respectively
K - Antenna shape factor (K = 1,07 for circular antennas and K = 1,47 for square
antennas)
L1 - Inductance in nH
N1 - Number of turns
Ln: Natural logarithm function
The actual values of the antenna inductance, resistance, and capacitance at 13.56 MHz
depend on various parameters such as:
antenna construction (Type of PCB)
thickness of conductor
distance between the windings
shielding layer
metal or ferrite in the near environment
Therefore a measurement of those parameters under real life conditions, or at least a
rough measurement and a tuning procedure is highly recommended to guarantee a
reasonable performance. For details refer to the above mentioned application notes.
L
1
2
=
I
1
I
1
D
1
------
ln
K
–
N
1
18
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M34559G6-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
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| M3455AGCFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M3455AGC-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
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