參數資料
型號: DMC73C168
英文描述: 8Bit Single Chip Microcontroller
中文描述: 8位單芯片微控制器
文件頁數: 27/90頁
文件大?。?/td> 742K
代理商: DMC73C168
27
8Bit Single Chip Microcontroller
DMC73C167
5.1.3 C Port
The C Port is an 8-bit bidirectional I/O port any of those eight pins can be individually
programmed as input and output lines under software control. In the DMC73C167,
the user can specify internal pull-up (5V) resistor insertion or not selectively for port C
pins (mask option)
Table 5-5. P11 0108h CDDR C Port Direction
Bit
R
W
7
6
5
4
3
2
1
0
CDDR7
CDDR6
CDDR5
CDDR4
CDDR3
CDDR2
CDDR1
CDDR0
Table 5-6. P10 010Ah CDATA C Port Data
Bit
R
W
7
6
5
4
3
2
1
0
CDATA7
CDATA6
CDATA5
CDATA4
CDATA3
CDATA2
CDATA1
CDATA0
Table 5-7. C Port Control Register Operation
CDDRn
0
Driection
Input Port
CDATAn(Read)
0 ; Input 'Low'
1 : Input 'High'
Written Data
CDATAn(Write)
Invalid
1
Output Port
0 ; Output 'Low'
1 : Output 'High'
5.1.4 D Port
The D Port is a 4-bit bidirectional I/O port any of those four pins can be individually
programmed as input and output lines under software control. In the DMC73C167, the
user can specify internal pull-up (5V) resistor insertion or not selectively for port D pins
(mask option).
Table 5-8. P13 010Dh DDDR D Port Direction
Bit
R
W
7
6
5
4
3
2
1
0
-
-
-
-
DDDR3
DDDR2
DDDR1
DDDR0
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