參數(shù)資料
型號： MC13211
廠商： 飛思卡爾半導體(中國)有限公司
英文描述： ZigBee- Compliant Platform - 2.4 GHz Low Power Transceiver for the IEEE 802.15.4 Standard plus Microcontroller(ZigBee平臺- 為IEEE 802.15.4標準和微控制器設計的2.4 GHz低功率收發(fā)器)
中文描述： ZigBee兼容平臺- 2.4 GHz的低功耗收發(fā)器符合IEEE 802.15.4標準加微控制器（ZigBee的平臺-為IEEE 802.15.4無線標準和微控制器設計的2.4 GHz的低功率收發(fā)器）
文件頁數(shù)： 64/70頁
文件大?。?/td> 802K
代理商： MC13211
MC13211/212/213/214 Technical Data, Rev. 0.0,
64
Freescale Semiconductor
The on-chip trim capability may be used to determine the closest standard value by adjusting the trim value
via the SPI and observing the frequency at CLKO. Each internal trim load capacitor has a trim range of
approximately 5 pF in 20 fF steps.
Initial tolerance for the internal trim capacitance is approximately
±
15%.
Since the MC1321x contains an on-chip reference frequency trim capability, it is possible to trim out
virtually all of the initial tolerance factors and put the frequency within 0.12 ppm on a board-by-board
basis. Individual trimming of each board in a production environment allows use of the lowest cost crystal,
but requires that each board go through a trimming procedure. This step can be avoided by
using/specifying a crystal with a tighter stability tolerance, but the crystal will be slightly higher in cost.
A tolerance analysis budget may be created using all the previously stated factors. It is an engineering
judgment whether the worst case tolerance will assume that all factors will vary in the same direction or if
the various factors can be statistically rationalized using RSS (Root-Sum-Square) analysis. The aging
factor is usually specified in ppm/year and the product designer can determine how many years are to be
assumed for the product lifetime. Taking all of the factors into account, the product designer can determine
the needed specifications for the crystal and external load capacitors to meet the IEEE 802.15.4
specification.
Figure 34. MC1321x Modem Crystal Circuit
7.1.2
Suggested Crystals
Three suggested crystal types are shown in
Table 21
,
Table 22
, and
Table 23
. These variations are given
because the crystals have different trade-offs between cost and usage.
Table 21. Daishinku KDS - DSX321G ZD00882 Crystal Specifications
1,2
Parameter
Value
Unit
Condition
Type
DSX321G
surface mount
Frequency
16
MHz
Frequency tolerance
± 20
ppm
at 25 °C ± 3 °C
Equivalent series resistance
100
max
Y1
16MHz
C10
6.8pF
C11
6.8pF
Y1 = Daishinku KDS - DSX321G ZD00882
XTAL1
27
XTAL2
28
U3
MC1321x
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相關代理商/技術參數(shù)
參數(shù)描述
MC13211_08 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:ZigBee⑩- Compliant Platform -2.4 GHz Low Power Transceiver for the IEEE㈢ 802.15.4 Standard plus Microcontroller
MC13211R2 功能描述:射頻收發(fā)器 SIP 802.15.4 2.4GHZ 16KB RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray
MC13212 功能描述:射頻收發(fā)器 TOROWEAP IC 32K RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray
MC13212R2 功能描述:射頻收發(fā)器 SIP 802.15.4 2.4GHZ 32KB RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray
MC13213 功能描述:射頻收發(fā)器 TOROWEAP IC 60K RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray
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