參數(shù)資料
型號: MM908E621ACDWB
廠商: Freescale Semiconductor
文件頁數(shù): 47/60頁
文件大?。?/td> 0K
描述: IC QUAD HALF BRDG TRPL SW 54SOIC
標(biāo)準(zhǔn)包裝: 26
應(yīng)用: 自動(dòng)鏡像控制
核心處理器: HC08
程序存儲(chǔ)器類型: 閃存(16 kB)
控制器系列: 908E
RAM 容量: 512 x 8
接口: SCI,SPI
輸入/輸出數(shù): 12
電源電壓: 9 V ~ 16 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 54-BSSOP(0.295",7.50mm 寬)裸露焊盤
包裝: 管件
供應(yīng)商設(shè)備封裝: 54-SOICW-EP
Analog Integrated Circuit Device Data
Freescale Semiconductor
51
908E621
TYPICAL APPLICATIONS
LIN Pin
For DPI (Direct Power Injection) and ESD (Electrostatic
Discharge), it is recommended to place a high quality ceramic
decoupling capacitor near the LIN pin. 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 Pins (VDD and VSS)
Use a high quality ceramic decoupling capacitor to
stabilize the regulated voltage.
MCU Digital Supply Pins (EVDD and EVSS)
Fast signal transitions on MCU pins 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 pins.
MCU Analog Supply Pins (VREFH/VDDA and VREFL/
VSSA)
To avoid noise on the analog supply pins, it is 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.
Figure 32 and Figure 33 show the recommendations on
schematics and layout level, and Table 21 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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