参数资料
型号: M38002SFP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 8 MHz, MICROCONTROLLER, PQFP64
封装: 14 X 14 MM, 0.80 MM PITCH, PLASTIC, QFP-64
文件页数: 154/174页
文件大小: 1752K
代理商: M38002SFP
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 SRDY
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(XIN) = 4 MHz is divided by 32)
The SRDY (receivable signal) is used.
The receiving side outputs the SRDY signal at intervals of 2 ms (generated by
timer), and 2-byte data is transferred from the transmitting side to the receiving
side.
P42
/INT0
SCLK1
TXD
3800 group
SRDY
SCLK
RXD
3800 group
Transmitting side
Receiving side
Fig. 2.3.14 Timing chart [Communication using a clock synchronous serial I/O]
D0
D4
D2
D1
D6
D5
D7
D3
D0
D4
D2
D1
D6
D5
D7
D3
D0
D1
TXD
SCLK
SRDY
2 ms
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