参数资料
型号: M38004E8SS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, UVPROM, 8 MHz, MICROCONTROLLER, CDIP64
封装: 0.750 INCH, 1.78 MM PITCH, WINDOWED, CERAMIC, SDIP-64
文件页数: 123/174页
文件大小: 1752K
代理商: M38004E8SS
APPLICATION
2.1 I/O port
2-3
3800 GROUP USER’S MANUAL
2.1.2 Related registers
Fig. 2.1.2 Structure of Port Pi (i = 0, 1, 2, 3, 4, 5, 6, 7)
Port Pi
b7 b6 b5 b4 b3 b2 b1 b0
B
Function
At reset
RW
0
1
2
3
4
5
6
7
Name
Port Pi0
Port Pi1
Port Pi2
Port Pi3
Port Pi4
Port Pi5
Port Pi6
Port Pi7
In output mode
Write
Read
q
Port latch
In input mode
Write : Port latch
Read : Value of pins
q
?
Port Pi (Pi) (i = 0, 1, 2, 3, 4, 5, 6, 7)
[Address : 0016, 0216, 0416, 0616, 0816, 0A16, 0C16, 0E16]
Note :
(Note)
Port P7 register [Address : 0E16]
Port P7 is a 2-bit port (P70, P71). Accordingly, when bits 2 to 7 are read
out, the contents are “0.”
Fig. 2.1.3 Structure of Port Pi direction register (i = 0, 1, 2, 3, 4, 5, 6, 7)
Port Pi direction register
b7 b6 b5 b4 b3 b2 b1 b0
B
Function
At reset
RW
0
1
2
3
4
5
6
7
Name
Port Pi direction register
0
Port Pi direction register (PiD) (i =0, 1, 2, 3, 4, 5, 6, 7)
[Address : 0116, 0316, 0516, 0716, 0916, 0B16, 0D16, 0F16]
0 : Port Pi0 input mode
1 : Port Pi0 output mode
0 : Port Pi1 input mode
1 : Port Pi1 output mode
0 : Port Pi2 input mode
1 : Port Pi2 output mode
0 : Port Pi3 input mode
1 : Port Pi3 output mode
0 : Port Pi4 input mode
1 : Port Pi4 output mode
0 : Port Pi5 input mode
1 : Port Pi5 output mode
0 : Port Pi6 input mode
1 : Port Pi6 output mode
0 : Port Pi7 input mode
1 : Port Pi7 output mode
!
Note :
(Note)
Port P7 direction register [Address : 0F16]
Port P7 is a 2-bit port (P70, P71). Accordingly, these bits do not have a
direction register function.
(Note)
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