參數(shù)資料
型號: M38000S8-XXXSP
廠商: Mitsubishi Electric Corporation
英文描述: 16 Characters x 2 Lines, 5x7 Dot Matrix Character and Cursor
中文描述: 8位單片機
文件頁數(shù): 79/173頁
文件大?。?/td> 4203K
代理商: M38000S8-XXXSP
2-31
3800 GROUP USER’S MANUAL
APPLICATION
2.3 Serial I/O
2.3.5 Serial I/O application examples
(1) Communication using a clock synchronous serial I/O (transmit/receive)
Outline :
2-byte data is transmitted and received through the clock synchronous serial I/O. The
S
RDY
signal is used for communication control.
Figure 2.3.13 shows a connection diagram, and Figure 2.3.14 shows a timing chart.
Fig. 2.3.13 Connection diagram [Communication using a clock synchronous serial I/O]
Specifications :
The Serial I/O is used (clock synchronous serial I/O is selected)
Synchronous clock frequency : 125 kHz (f(X
IN
) = 4 MHz is divided by 32)
The
S
RDY
(receivable signal) is used.
The receiving side outputs the
S
RDY
signal at intervals of 2 ms (generated by
timer), and 2-byte data is transferred from the transmitting side to the receiving
side.
P4
2
/
INT
0
S
CLK1
T
X
D
3800 group
S
RDY
S
CLK
R
X
D
3800 group
Transmitting side
Receiving side
Fig. 2.3.14 Timing chart [Communication using a clock synchronous serial I/O]
D
0
D
4
D
2
D
1
D
6
D
5
D
7
D
3
D
0
D
4
D
2
D
1
D
6
D
5
D
7
D
3
D
0
D
1
T
X
D
S
CLK
S
RDY
2 ms
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