參數(shù)資料
型號: MC68HC05P18MDW
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封裝: SOIC-28
文件頁數(shù): 111/144頁
文件大?。?/td> 1348K
代理商: MC68HC05P18MDW
Input/Output (I/O) Ports
I/O Port Programming
MC68HC(8)05P18 — Rev. 2.0
Advance Information
MOTOROLA
Input/Output (I/O) Ports
69
NOTE:
To avoid generating a glitch on an I/O port pin, data should be written to
the I/O port data register before writing a logical 1 to the corresponding
data direction register.
Table 7-4. Port D I/O Functions
DDRA
I/O Pin Mode
Access to DDRA
@ $0007
Accesses to Data
Register @ $0003
Read/Write
Read
Write
0
Input, high impedance
DDRD5
I/O pin
*
1
Output
DDRD5
PD5/CKOUT
*Does not affect input, but stored to data register
**PD7 is input-only
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