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參數(shù)資料
| 型號(hào)： | MC68HC11G5CFN |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC84 |
| 封裝： | PLASTIC, LCC-84 |
| 文件頁(yè)數(shù)： | 134/195頁(yè) |
| 文件大小： | 982K |
| 代理商： | MC68HC11G5CFN |
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INPUT/OUTPUT PORTS
4-5
In the single chip modes (normal and bootstrap), the Port C pins are general purpose I/O pins. Bits
0 – 7 are input or output pins depending on the corresponding bit of DDRC. While a bit is configured
as an output, reading the bit returns the sensed level at the input to the Port C pin driver. At reset,
all DDRC bits are cleared and all Port C bits are configured as inputs.
4.6.1
Data Register (PORTC)
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
PORTC
$1006
7
6
5
4
3
2
1
0
RESET:
Alternate Pin Function:
D7
D6
D5
D4
D3
D2
D1
D0
READ:
Any time (inputs return pin level; outputs return pin driver input level).
WRITE:
Data stored in internal latch (drives pins only if configured as outputs)
RESET:
In single chip modes all Port C pins are configured as general purpose inputs.
In expanded modes, Port C is configured as the data bus.
4.6.2
Data Direction Register (DDRC)
DDC7
DDC6
DDC5
DDC4
DDC3
DDC2
DDC1
DDC0
DDRC
$1007
7
6
5
4
3
2
1
0
RESET:
READ:
Any time.
WRITE:
Any time.
RESET:
$00 (all general purpose I/O configured for input only).
0 – Bits set to zero configure the corresponding I/O pins as inputs.
1 – Bits set to one configure the corresponding I/O pins as outputs.
4.7
PORT D
Port D is a 6-bit bidirectional port which also supports the SCI and SPI systems. When the SCI or
SPI is not needed the associated pins may be used for general purpose I/O.
Port D pins serve several functions depending on the MCU mode and various internal control
registers. If the DWOM bit in the SPCR register is set, the p-channel drivers in the output buffers are
disabled (wired-OR mode).
Port D bit 0 becomes the Receive Data input (RXD) when the SCI receiver is enabled (RE bit in the
SCCR2 register set to one). When the RE bit is clear, Port D bit 0 defaults to being a general purpose
I/O pin controlled by DDRD.
Freescale
Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
nc.
..
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:
MC68HC11G5,
MC68HC11G7,
MC68HC711G5
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC11G7 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcontroller Unit |
| MC68HC11G7CFN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| MC68HC11K0 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC11K0CFN2 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-Bit Microcontroller |
| MC68HC11K0CFN3 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-Bit Microcontroller |
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