MC68HC908AB32 MOTOROLA [Motorola, Inc], MC68HC908AB32 Datasheet - Page 34
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MC68HC908AB32
Manufacturer Part Number
MC68HC908AB32
Description
HCMOS Microcontroller Unit
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908AB32.pdf
(392 pages)
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General Description
1.6 Pin Functions
1.6.1 Power Supply Pins (V
Technical Data
34
Description of pin functions are provided here.
V
from a single power supply.
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 as
shows. Place the C1 bypass capacitor as close to the MCU as possible.
Use a high-frequency-response ceramic capacitor for C1. C2 is an
optional bulk current bypass capacitor for use in applications that require
the port pins to source high current levels.
V
for the serial clock in the serial peripheral interface module (SPI). See
Section 16. Serial Peripheral Interface Module
V
DD
SS
SS
Freescale Semiconductor, Inc.
is also the ground for the port output buffers and the ground return
must be grounded for proper MCU operation.
and V
For More Information On This Product,
DD
and V
SS
Go to: www.freescale.com
are the power supply and ground pins. The MCU operates
SS
General Description
)
Figure 1-3. Power Supply Bypassing
NOTE: Component values shown
V
DD
V
DD
represent typical applications.
MCU
0.1 F
+
C1
C2
MC68HC908AB32
V
SS
(SPI).
Figure 1-3
MOTOROLA
—
Rev. 1.0
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