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| MC68HC908GP32 Datasheet, PDF (41/410 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs) | |||
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Freescale Semiconductor, Inc.
General Description
Pin Functions
RST 1
PTC0 2
PTC1 3
PTC2 4
PTC3 5
PTC4 6
PTC5 7
PTC6 8
PTE0/TxD 9
PTE1/RxD 10
IRQ 11
33 PTA1/KBD1
32
PTA0/KBD0
31
VSSAD/VREFL
30
VDDAD/VREFH
29 PTB7/AD7
28 PTB6/AD6
27
PTB5/AD5
26 PTB4/AD4
25
PTB3/AD3
24
PTB2/AD2
23 PTB1/AD1
Figure 1-4. 44-Pin QFP Pin Assignments
1.6 Pin Functions
Descriptions of the pin functions are provided here.
1.6.1 Power Supply Pins (VDD and VSS)
VDD and VSS are the power supply and ground pins. The MCU operates
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 Figure 1-5
shows. Place the C1 bypass capacitor as close to the MCU as possible.
MC68HC908GP32â¢MC68HC08GP32 â Rev. 6
MOTOROLA
General Description
For More Information On This Product,
Go to: www.freescale.com
Technical Data
39
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