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MPC8280 데이터시트(PDF) 1322 Page - Freescale Semiconductor, Inc

부품명 MPC8280
상세설명  PowerQUICC??II Family Reference Manual
PDF  1386 Pages
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제조업체  FREESCALE [Freescale Semiconductor, Inc]
홈페이지  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MPC8280 데이터시트(HTML) 1322 Page - Freescale Semiconductor, Inc

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Parallel I/O Ports
MPC8280 PowerQUICC II Family Reference Manual, Rev. 1
41-6
Freescale Semiconductor
41.3
Port Block Diagram
Figure 41-6 shows the functional block diagram.
Figure 41-6. Port Functional Operation
41.4
Port Pins Functions
Each pin can operate as a general purpose I/O pin or as a dedicated input or output pin.
Pin
PDAT
x
Default
Input IN1
Default
Input IN2
To DED IN1
To DED IN2
From DED OUT2
PDAT
x Read
0
1
0
1
PPAR & PSOR & PDIR
PPAR & PSOR & PDIR
Open
Drain
Control
EN
PODR
0
Latch
From DED OUT1
PSOR
1
0
1
PDAT
x Write
To/from internal bus
Register Name
0
1
Description
PPAR
x
General purpose
Dedicated
Port pin assignment
PSOR
x
Dedicated 1
Dedicated 2
Special operation
PDIR
x
Input
Output
Direction1
1 Bidirectional signals must be programmed as inputs (PDIR = 0).
PODR
x
Regular
Open drain
PDAT
x
01
Data
Read
PDIR
PPAR



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