PPC8544EVTANG Freescale Semiconductor, PPC8544EVTANG Datasheet - Page 108
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PPC8544EVTANG
Manufacturer Part Number
PPC8544EVTANG
Description
EVAL MPC8544 783FCPBGA
Manufacturer
Freescale Semiconductor
Type
Microcontrollerr
Datasheet
1.MPC8544VTALF.pdf
(117 pages)
Specifications of PPC8544EVTANG
Contents
Board
For Use With/related Products
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Lead free / RoHS Compliant
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Part Number:
PPC8544EVTANG
Manufacturer:
FREESCALE
Quantity:
20 000
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System Design Information
21.5
To ensure reliable operation, it is highly recommended to connect unused inputs to an appropriate signal
level. All unused active low inputs should be tied to V
required. All unused active high inputs should be connected to GND. All NC (no connect) signals must
remain unconnected. Power and ground connections must be made to all external V
OV
21.6
The MPC8544E requires weak pull-up resistors (2–10 kΩ is recommended) on open drain type pins
including I
Correct operation of the JTAG interface requires configuration of a group of system control pins as
demonstrated in
state under normal operating conditions as most have asynchronous behavior and spurious assertion will
give unpredictable results.
The following pins must NOT be pulled down during power-on reset: TSEC3_TXD[3], HRESET_REQ,
TRIG_OUT/READY/QUIESCE, MSRCID[2:4], ASLEEP. The DMA_DACK[0:1] and TEST_SEL pins
must be set to a proper state during POR configuration. Refer to the pinout listing table
details. Refer to the PCI 2.2 Local Bus Specifications, for all pullups required for PCI.
21.7
The MPC8544E drivers are characterized over process, voltage, and temperature. For all buses, the driver
is a push-pull single-ended driver type (open drain for I
an external resistor is connected from the chip pad to OV
varied until the pad voltage is OV
components, the resistances of the pull-up and pull-down devices. When data is held high, SW1 is closed
(SW2 is open) and R
108
DD
, GV
Connection Recommendations
Pull-Up and Pull-Down Resistor Requirements
Output Buffer DC Impedance
2
DD
C pins and MPIC interrupt pins.
, and LV
Figure
MPC8544E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 5
P
is trimmed until the voltage at the pad equals OV
DD
69. Care must be taken to ensure that these pins are maintained at a valid deasserted
, and GND pins of the device.
DD
/2 (see
Figure
67). The output impedance is the average of two
DD
2
C). To measure Z
, TV
DD
or GND. Then, the value of each resistor is
DD
, BV
DD
DD
, OV
0
/2. R
for the single-ended drivers,
DD
P
, GV
then becomes the
DD
Freescale Semiconductor
DD
(Table
, TV
, and LV
DD
62) for more
, BV
DD
DD
as
,
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