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| 型號(hào)： | MC68HC11F1MFN3 |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, EEPROM, 3 MHz, MICROCONTROLLER, PQCC68 |
| 封裝： | PLASTIC, LCC-68 |
| 文件頁(yè)數(shù)： | 143/162頁(yè) |
| 文件大?。?/td> | 4554K |
| 代理商： | MC68HC11F1MFN3 |
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PARALLEL INPUT/OUTPUT
MOTOROLA
TECHNICAL DATA
6-1
SECTION 6 PARALLEL INPUT/OUTPUT
The MC68HC11F1 MCU has up to 54 input/output lines, depending on the operating
mode. The data bus of this microcontroller is nonmultiplexed. I/O lines are organized
into seven parallel ports. Ports with bidirectional pins have an associated data direc-
tion control register. This register (DDRx) contains a data direction control bit for each
bidirectional port line. The following table is a summary of the configuration and fea-
tures of each port.
Port pin function is mode dependent. Do not confuse pin function with the electrical
state of the pin at reset. Port pins are either driven to a specified logic level or are con-
figured as high impedance inputs. I/O pins configured as high-impedance inputs have
port data that is indeterminate. The contents of the corresponding latches are depen-
dent upon the electrical state of the pins during reset. In port descriptions, an “I” indi-
cates this condition. Port pins that are driven to a known logic level during reset are
shown with a value of either one or zero. Some control bits are unaffected by reset.
Reset states for these bits are indicated with a “U”.
6.1 Port A
Port A has eight bidirectional I/O pins and shares functions with the timer system.
Table 6-1 I/O Port Configuration
Port
Input Pins
Output Pins
Bidirectional Pins
Shared Functions
Port A
—
8
Timer
Port B
—
8
—
High-Order Address
Port C
—
8
Data Bus
Port D
—
6
SCI and SPI
Port E
8
—
A/D Converter
Port F
—
8
—
Low-Order Address
Port G
—
8
Chip Select Outputs
PORTA — Port A Data
$1000
Bit 7
654321
Bit 0
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
RESET:
IIIIIII
I
Alt. Pin
Func.:
PAI
OC2
OC3
OC4
IC4/OC5
IC1
IC2
IC3
And/or:
OC1
—
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| MC68HC11F1MFN4 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Technical Summary 8-Bit Microcontroller |
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| MC68HC11F1MFU1 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers |
| MC68HC11F1MFU3 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers |
| MC68HC11F1MFU4 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers |
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