mm908e625 Freescale Semiconductor, Inc, mm908e625 Datasheet - Page 43

• Manufacturer Part Number: mm908e625
• Description: Integrated Quad Half H-bridge With Power Supply, Embedded Mcu, And Lin Serial Communication
• Manufacturer: Freescale Semiconductor, Inc

recommendations to improve EMC/EMI performance.
Further generic design recommendations can be e.g. found
on the Freescale website www.freescale.com.
VSUP pins (VSUP1:VSUP3)
decoupling capacitor close to the VSUP pins to improve
EMC/EMI behaviour.
LIN pin
Discharge) its recommended to place a high-quality ceramic
decoupling capacitor near the LIN pin. An additional varistor
will further increase the immunity against ESD. A ferrit in the
LIN line will suppress some of the noise induced.
Voltage regulator output pins (VDD and AGND)
stabilize the regulated voltage.
Analog Integrated Circuit Device Data
Freescale Semiconductor
This paragraph gives some device specific
Its recommended to place a high-quality ceramic
For DPI (Direct Power Injection) and ESD (Electro Static
Use a high-quality ceramic decoupling capacitor to
V
LIN
SUP
V1
D1
L1
C1
Figure 25. EMC/EMI recommendations
+
EMC/EMI RECOMMENDATIONS
C2
C5
VSUP3
GND2
VSUP1
VSUP2
LIN
GND1
MCU digital supply pins (EVDD and EVSS)
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)
take special care on the layout. The MCU digital and analog
supplies should be tied to the same potential via seperate
traces and connected to the voltage regulator output.
schematics and layout level and
recommended external components and layout
considerations.
MM908E625
Fast signal transitions on MCU pins place high, short-
To avoid noise on the analog supply pins its important to
Figure 25
and
VREFH
VREFL
VDDA
EVDD
EVSS
VSSA
VDD
VSS
Figure 26
FACTORY TRIMMING AND CALIBRATION
C3
show the recommendations on
C4
Table 13
TYPICAL APPLICATIONS
incidates
908E625
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