參數(shù)資料
型號: MCHC705P6ACSDR2
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER
文件頁數(shù): 83/130頁
文件大?。?/td> 1541K
代理商: MCHC705P6ACSDR2
Input/Output Ports
Advance Information
MC68HC705P6A — Rev. 2.0
56
Input/Output Ports
MOTOROLA
6.7 I/O Port Programming
Each pin on port A through port D (except pin 7 of port D) can be
programmed as an input or an output under software control as shown
in Table 6-1, Table 6-2, Table 6-3, and Table 6-4. The direction of a pin
is determined by the state of its corresponding bit in the associated port
data direction register (DDR). A pin is configured as an output if its
corresponding DDR bit is set to a logic 1. A pin is configured as an input
if its corresponding DDR bit is cleared to a logic 0.
Table 6-1. Port A I/O Functions
DDRA
I/O Pin Mode
Accesses to
DDRA @ $0004
Accesses to Data
Register @ $0000
Read/Write
Read
Write
0
IN, Hi-Z
DDRA0–DDRA7
I/O Pin
See Note
1
OUT
DDRA0–DDRA7
PA0–PA7
Note: Does not affect input, but stored to data register
Table 6-2. Port B I/O Functions
DDRB
I/O Pin Mode
Accesses to
DDRB @ $0005
Accesses to Data
Register @ $0001
Read/Write
Read
Write
0
IN, Hi-Z
DDRB5–DDRB7
I/O Pin
See Note
1
OUT
DDRB5–DDRB7
PB5–PB7
Note: Does not affect input, but stored to data register
Table 6-3. Port C I/O Functions
DDRC
I/O Pin Mode
Accesses to
DDRC @ $0006
Accesses to Data
Register @ $0002
Read/Write
Read
Write
0
IN, Hi-Z
DDRC0–DDRC7
I/O Pin
See Note
1
OUT
DDRC0–DDRC7
PC0–PC7
Note: Does not affect input, but stored to data register
相關(guān)PDF資料
PDF描述
MC68HC705P6AMP 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP28
MC68HC705P6CDW 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC705P6P 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP28
MC68HC705P6DW 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC705P6S 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, CDIP28
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