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參數(shù)資料
| 型號： | MM908E621ACDWB |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO54 |
| 封裝： | 17.90 X 7.50 MM, 0.65 MM PITCH, PLASTIC, SOIC-54 |
| 文件頁數(shù)： | 51/62頁 |
| 文件大?。?/td> | 917K |
| 代理商： | MM908E621ACDWB |
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Analog Integrated Circuit Device Data
Freescale Semiconductor
55
908E621
TYPICAL APPLICATIONS
EMC/EMI RECOMMENDATIONS
This paragraph gives some device specific
recommendations to improve EMC/EMI performance.
Further generic design recommendations can be e.g. found
on the Freescale web site www.freescale.com.
VSUP terminals (VSUP[1:8])
Its recommended to place a high quality ceramic
decoupling capacitor close to the VSUP terminals to improve
EMC/EMI behavior.
LIN terminal
For DPI (Direct Power Injection) and ESD (Electrostatic
Discharge) its recommended to place a high quality ceramic
decoupling capacitor near the LIN terminal. An additional
varistor will further increase the immunity against ESD. A
ferrite in the LIN line will suppress some of the noise induced.
Voltage regulator output terminals (VDD and VSS)
Use a high quality ceramic decoupling capacitor to
stabilize the regulated voltage.
MCU digital supply terminals (EVDD and EVSS)
Fast signal transitions on MCU terminals place high, short-
duration current demands on the power supply. To prevent
noise problems, take special care to provide power supply
bypassing at the MCU. It is recommended that a high quality
ceramic decoupling capacitor be placed between these
terminals.
MCU analog supply terminals (VREFH/VDDA and VREFL/
VSSA)
To avoid noise on the analog supply terminals, its
important to take special care on the layout. The MCU digital
and analog supplies should be tied to the same potential via
separate traces and connected to the voltage regulator
output.
schematics and layout level and Table 23 indicates
recommended external components and layout
considerations.
Figure 32. EMC/EMI recommendations
MM908E621
EVDD
VDD
EVSS
VSS
VSUP[1:8]
GND[1:4]
VSUP
+
VDDA/VREFH
VSSA/VREFL
LIN
C1
C2
D1
C3
C4
C5
L1
V1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MM908E621ACDWB/R2 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Quad Half-bridge and Triple High Side with Embedded MCU and LIN for High End Mirror |
| MM908E621ACDWBR2 | 功能描述:8位微控制器 -MCU QUAD HB / TRIPLE HS 841B RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| MM908E621ACPEK | 功能描述:8位微控制器 -MCU QUAD H-B/3-HS W/MCU & LI RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| MM908E621ACPEKR2 | 功能描述:8位微控制器 -MCU QUAD HB AND TRIPLE HS RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| MM908E622 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Quad Half-Bridge, Triple High-Side and EC Glass Driver with Embedded MCU and LIN for High End Mirror |
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