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参数资料
| 型号： | M38207M8-XXXFP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP80 |
| 封装： | 0.80 MM PITCH, PLASTIC, QFP-80 |
| 文件页数： | 20/67页 |
| 文件大小： | 1099K |
| 代理商： | M38207M8-XXXFP |
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26
MITSUBISHI MICROCOMPUTERS
3820 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Asynchronous Serial I/O1 (UART) Mode
Clock asynchronous serial I/O1 mode (UART) can be selected by
clearing the serial I/O1 mode selection bit of the serial I/O1 control
register to “0”.
Eight serial data transfer formats can be selected, and the transfer
formats used by a transmitter and receiver must be identical.
The transmit and receive shift registers each have a buffer regis-
ter, but the two buffers have the same address in memory. Since
the shift register cannot be written to or read from directly, transmit
data is written to the transmit buffer register, and receive data is
read from the receive buffer register.
The transmit buffer register can also hold the next data to be
transmitted, and the receive buffer register can hold a character
while the next character is being received.
Fig. 17 Block diagram of UART serial I/O1
Fig. 18 Operation of UART serial I/O1 function
f(XIN)
1/4
OE
PE FE
1/16
Data bus
Receive buffer register(RB)
Address 001816
Receive shift register
Receive buffer full flag (RBF)
Serial I/O receive interrupt request (RI)
Baud rate generator
Frequency division ratio 1/(n+1)
Address 001C16
ST/SP/PA generator
Transmit buffer register(TB)
Data bus
Transmit shift register
Address 001816
Transmit shift register shift completion flag (TSC)
Transmit buffer empty flag (TBE)
Serial I/O1 status register
Address 001916
STdetector
SP detector
UART control register
Address 001B16
Character length selection bit
Address 001A16
BRG count source selection bit
Transmit interrupt source selection bit
Serial I/O1 synchronization clock selection bit
Clock control circuit
Character length selection bit
7 bits
8 bits
Serial I/O1 control register
P46/SCLK1
Serial I/O1 status register
P44/RXD
P45/TXD
TSC=0
TBE=1
RBF=0
TBE=0
RBF=1
ST
D0
D1
SP
D0
D1
ST
SP
TBE=1
TSC=1
ST
D0
D1
SP
D0
D1
ST
SP
Transmit or receive clock
Transmit buffer register
write signal
Generated at 2nd bit in 2-stop-bit mode
1 start bit
7 or 8 data bits
1 or 0 parity bit
1 or 2 stop bit (s)
1: Error flag detection occurs at the same time that the RBF flag becomes "1" (at 1st stop bit, during reception).
2: The transmit interrupt (TI) can be selected to occur when either the TBE or TSC flag becomes "1", depending on the setting of the transmit interrupt
source selection bit (TIC) of the serial I/O1 control register.
3: The serial I/O1 receive interrupt (RI) is set when the RBF flag becomes "1".
4: After data is written to the transmit buffer register when TSC=1, 0.5 to 1.5 cycles of the data shift cycle is necessary until changing to TSC=0.
Notes
V
Serial output TXD
Serial input RXD
Receive buffer register
read signal
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PDF描述 |
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| M38207M8-XXXGP | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP80 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M38207RFS | 制造商:Renesas Electronics Corporation 功能描述:EMULATION MCU/8BIT CMOS EMULATION CHIP - Bulk |
| M3821 BK001 | 制造商:Alpha Wire 功能描述:CBL 25COND 18AWG BLK 1000' |
| M3821 BK002 | 制造商:Alpha Wire 功能描述:CBL 25COND 18AWG BLK 500' |
| M3821 BK005 | 制造商:Alpha Wire 功能描述:CBL 25COND 18AWG BLK 100' |
| M38220E1DFP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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