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參數(shù)資料
| 型號： | M38000S7-XXXFP |
| 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)： | 90/173頁 |
| 文件大?。?/td> | 4203K |
| 代理商： | M38000S7-XXXFP |
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2.3 Serial I/O
2-42
APPLICATION
3800 GROUP USER’S MANUAL
Control in the slave unit
After a setting of the related registers is completed as shown in Figure 2.3.26, the slave unit becomes the
state which is received a synchronizing clock at all times, and the Serial I/O receive interrupt request bit is
set to “1” every time an 8-bit synchronous clock is received.
By the serial I/O receive interrupt processing routine, the data to be transmitted next is written to the Transmit
buffer register after received data is read out.
However, if no serial I/O receive interrupt occurs for more than a certain time (head adjustive time), the
following processing will be performed.
1. The first 1 byte data of the transmission data in the block is written into the Transmit buffer register.
2. The data to be received next is processed as the first 1 byte of the received data in the block.
Figure 2.3.28 shows the control in the slave unit using a serial I/O receive interrupt and any timer interrupt
(for head adjustive).
Fig. 2.3.28 Control in the slave unit
Write a transmission data
Read a reception data
N
Within a block transfer period
Y
Y
A received byte counter
≥
8
N
RTI
Write any data (FF
16
)
A received byte counter +1
Heading adjustive
counter
Initialized
value (
Note 3
)
Serial I/O receive interrupt
processing routine
Timer interrupt processing
routine
Heading adjustive counter – 1
N
Heading adjustive
counter = 0
Y
RTI
Write the first transmission data
(first byte) in a block
A received byte counter
0
Check the received byte
counter to judge if a block
has been transfered.
In this example, set the value which is equal to the
heading adjustive time divided by the timer interrupt
cycle as the initialized value of the heading adjustive
counter.
For example:
When the heading adjustive time is 8 ms
and the timer interrupt cycle is 1 ms, set
8 as the initialized value.
3:
G
CLT (
Note 1
)
CLD (
Note 2
)
Push register to stack
Push the register used in
the interrupt processing
routine into the stack.
G
CLT (
Note 1
)
CLD (
Note 2
)
Push register to stack
Push the register used in
the interrupt processing
routine into the stack.
G
Pop registers
Pop registers which is
pushed to stack.
G
Pop registers
Pop registers which is
pushed to stack.
G
Notes 1:
When using the Index X mode flag (T).
2:
When using the Decimal mode flag (D).
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| M38000S7-XXXFS | 16 Characters x 2 Lines, 5x7 Dot Matrix Character and Cursor |
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| M38000S7-XXXSP | 16 Characters x 2 Lines, 5x7 Dot Matrix Character and Cursor |
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| M38000S8-XXXFS | 16 Characters x 2 Lines, 5x7 Dot Matrix Character and Cursor |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M38000S7-XXXFS | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER |
| M38000S7-XXXHP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER |
| M38000S7-XXXSP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER |
| M38000S7-XXXSS | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER |
| M38000S8-DXXXSP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 38000 SERIES |
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