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參數(shù)資料
| 型號(hào)： | M30240S9-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： | 單片16位CMOS微機(jī) |
| 文件頁數(shù)： | 97/142頁 |
| 文件大?。?/td> | 1637K |
| 代理商： | M30240S9-XXXFP |
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1-97
Mitsubishi microcomputers
M30240 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Preliminary Specifications REV. E
Specifications in this manual are tentative and subject to change
UART0 through UART2
2.23.2 Clock asynchronous serial I/O (UART) mode
The UART mode allows transmitting and receiving data after setting the desired transfer rate and
transfer data format. Table 1.27 and Table 1.28 list the specifications of the UART mode. Figure 1.88
shows the UARTi transmit/receive mode register.
Note 1: ‘n’ denotes the value 00
16
to FF
16
that is set to the UARTi bit rate generator.
Note 2: fEXT is input from the CLKi pin.
Note 3: If an overrun error occurs, the UARTi receive buffer will have the next data written in. Note also that the UARTi
receive interrupt request bit is not set to “1”
Table 1.27:
Specifications of UART Mode (1)
Item
Specification
Transfer data format
Character bit (transfer data): 7 bits, 8 bits, or 9 bits as selected
Start bit: 1 bit
Parity bit: Odd, even, or nothing as selected
Stop bit: 1 bit or 2 bits as selected
Transfer clock
When internal clock is selected (bit 3 at addresses 03A0
16
, 03A8
16
, 0378
16
= “0”):
fi/16(n+1) (Note 1) fi = f1, f8, f32
When external clock is selected (bit 3 at addresses 03A0
16
, 03A816, 0378
16
=“1”):
fEXT/16(n+1)(Note 1) (Note 2)
Transmission/reception
control
CTS function/RTS function/CTS, RTS function chosen to be invalid
Transmission start
condition
To start transmission, the following requirements must be met:
- Transmit enable bit (bit 0 at addresses 03A5
16
, 03AD
16
, 037D
16
) = “1”
- Transmit buffer empty flag (bit 1 at addresses 03A5
16
, 03AD
16
, 037D
16
) = “0”
- When CTS function selected, CTS input level = “L”
Reception start condition
To start reception, the following requirements must be met:
- Receive enable bit (bit 2 at addresses 03A5
16
, 03AD
16
, 037D
16
) = “1”
- Start bit detection
Interrupt request
generation timing
When transmitting
- Transmit interrupt cause select bits (bits 0,1 at address 03B0
16
, bit4 at address 037D
16
)
= “0”: Interrupts requested when data transfer from UARTi transfer buffer register to UARTi
transmit register is completed
- Transmit interrupt cause select bits (bits 0, 1 at address 03B0
16
, bit4 at address 037D
16
)
= “1”: Interrupts requested when data transmission from UARTi transfer register is
completed
When receiving
- Interrupts requested when data transfer from UARTi receive register to UARTi receive
buffer register is completed
Error detection
Overrun error (Note 3)
This error occurs when the next data is ready before contents of UARTi receive buffer
register are read out
Framing error
This error occurs when the number of stop bits set is not detected
Parity error
This error occurs when if parity is enabled, the number of 1’s in parity and character bits
does not match the number of 1’s set
Error sum flag
This flag is set (= 1) when any of the overrun, framing, and parity errors is encountered
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M30240SA | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240SA-XXXFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240SC | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240SC-XXXFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30245 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
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