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參數(shù)資料
| 型號： | 7542 |
| 英文描述： | 250mA CMOS LDO, lsupply 1uA and 2% Vout Accuracy, -40C to +125C, 3-SOT-23, T/R |
| 中文描述： | 7542群時鐘異步串行I / OApplication注意70K/MAY.22.03 |
| 文件頁數(shù)： | 5/9頁 |
| 文件大?。?/td> | 70K |
| 代理商： | 7542 |
May 2003
7542 Group
Clock Asynchronous Serial I/O (UART)
Page 5 of 8
REJ05B0023-0100Z
3.3 Communication Using UART of Serial I/O (Transmit/Receive)
Outline
: 2-byte data is transmitted and received, using UART. Port P0
0
is used for communication
control.
Specifications
: The Serial I/O1 (UART selected ) is used.
Transfer bit rate : 9600 bps (f(X
IN
) = 4.9152 MHz divided by 512)
Communication control using port P0
0
(output level of port P0
0
is controlled by
software)
2-byte data is transferred from the transmitter to the receiver at 10 ms intervals
which the timer generates.
Figure 3 shows a connection diagram, Figure 4 shows a timing chart, Figure 5 shows the control procedure
of transmitter, and Figure 6 shows an example of control procedure of receiver.
Figure 3 Connection diagram
Figure 4 Timing chart
P0
0
10 ms
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
ST
SP(2)
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
ST
SP(2)
D
0
ST
.....
.....
T
X
D
1
Transmitter
P0
0
TxD
1
7542 Group
P0
0
R
X
D
1
7542 Group
Receiver
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