參數(shù)資料
型號(hào): MPC5606SVMG6
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, FLASH, 64 MHz, MICROCONTROLLER, PBGA208
封裝: 17 X 17 MM, 1 MM PITCH, MAPBGA-208
文件頁數(shù): 95/134頁
文件大?。?/td> 890K
代理商: MPC5606SVMG6
Electrical characteristics
MPC560xS Microcontroller Data Sheet, Rev. 5
Preliminary—Subject to Change Without Notice
Freescale Semiconductor
63
A more accurate two-resistor thermal model can be constructed from the junction-to-board thermal resistance and the
junction-to-case thermal resistance. The junction-to-case thermal resistance describes when using a heat sink or where a
substantial amount of heat is dissipated from the top of the package. The junction-to-board thermal resistance describes the
thermal performance when most of the heat is conducted to the printed circuit board. This model can be used to generate simple
estimations and for computational fluid dynamics (CFD) thermal models.
To determine the junction temperature of the device in the application on a prototype board, use the thermal characterization
parameter (
JT) to determine the junction temperature by measuring the temperature at the top center of the package case using
Equation 4:
TJ = TT + (JT x PD)
Eqn. 4
where:
TT
= thermocouple temperature on top of the package (°C)
JT
= thermal characterization parameter (°C/W)
PD
= power dissipation in the package (W)
The thermal characterization parameter is measured in compliance with the JESD51-2 specification using a 40-gauge type T
thermocouple epoxied to the top center of the package case. Position the thermocouple so that the thermocouple junction rests
on the package. Place a small amount of epoxy on the thermocouple junction and approximately 1 mm of wire extending from
the junction. Place the thermocouple wire flat against the package case to avoid measurement errors caused by the cooling
effects of the thermocouple wire.
References:
Semiconductor Equipment and Materials International
805 East Middlefield Rd.
Mountain View, CA 94043 USA
(415) 964-5111
MIL-SPEC and EIA/JESD (JEDEC) specifications are available from Global Engineering Documents at 800-854-7179 or
303-397-7956.
JEDEC specifications are available on the WEB at http://www.jedec.org.
3.6
Electromagnetic compatibility (EMC) characteristics
Susceptibility tests are performed on a sample basis during product characterization.
3.6.1
EMC requirements on board
The following practices help minimize noise in applications.
Place a 100 nF capacitor between each of the VDD12/VSS12 supply pairs and also between the VDDPLL/VSSPLL pair.
The voltage regulator also requires stability capacitors for these supply pairs.
Place a 10
F capacitor on VDDR.
Isolate VDDR with ballast emitter to avoid voltage droop during STANDBY mode exit.
Enable pad slew rate only as necessary to eliminate I/O noise:
— Enabling slew rate for SMC pads will reduce noise on motors.
— Disabling slew rate for non-SMC pads will reduce noise on non-SMC IOs.
Enable PLL modulation (± 2%) for system clock.
Place decoupling capacitors for all HV supplies close to the pins.
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
MPC5606S
products
in
208
MAPBGA
packages
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