- 您現在的位置：買賣IC網 > PDF目錄299433 > M38749MFT-XXXGP (Mitsubishi Electric Corporation) SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER PDF資料下載
參數資料
| 型號： | M38749MFT-XXXGP |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| 中文描述： | 單芯片8位CMOS微機 |
| 文件頁數： | 29/92頁 |
| 文件大?。?/td> | 1292K |
| 代理商： | M38749MFT-XXXGP |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁當前第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁
35
3874 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
Fig. 29 Operation of UART serial I/O function
(2) Asynchronous Serial I/O (UART) Mode
Clock asynchronous serial I/O mode (UART) can be selected by
clearing the serial I/O1 mode selection bit (b6) 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-
Fig. 28 Block diagram of UART serial I/O1
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, and receive data is read from
the receive buffer.
The transmit buffer 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.
XIN
1/4
OE
PE FE
1/16
Data bus
Receive buffer register
Address 001816
Receive shift register
Receive buffer full flag (RBF)
Receive interrupt request (RI)
Baud rate generator
Frequency division ratio 1/(n+1)
Address 001C16
ST/SP/PA generator
Transmit buffer register
Data bus
Transmit shift register
Address 001816
Transmit shift register shift completion flag (TSC)
Transmit buffer empty flag (TBE)
Transmit interrupt request (TI)
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 synchronous clock selection bit
Clock control circuit
Character length selection bit
7 bits
8 bits
Serial I/O 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=1V
ST
D0
D1
SP
D0
D1
ST
SP
Transmit buffer write signal
VGenerated 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 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
Serial I/O output TXD
Serial I/O input RXD
Receive buffer read signal
Transmit or receive clock
相關PDF資料 |
PDF描述 |
|---|---|
| M38B41E1H-XXXXFP | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38B42E1H-XXXXFP | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38B48E1H-XXXXFP | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M39012/01-0017 | CABLE TERMINATED, MALE, N CONNECTOR, CRIMP, PLUG |
| M39012/01-0501 | CABLE TERMINATED, MALE, N CONNECTOR, CRIMP, PLUG |
相關代理商/技術參數 |
參數描述 |
|---|---|
| M38749T-RPD | 功能描述:EMULATION POD FOR 38000 SERIES 3 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 配件 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program RoHS指令信息:IButton RoHS Compliance Plan 標準包裝:1 系列:- 附件類型:USB 至 1-Wire? RJ11 適配器 適用于相關產品:1-Wire? 設備 產品目錄頁面:1429 (CN2011-ZH PDF) |
| M3874-BK001 | 制造商:Alpha Wire 功能描述: |
| M3874-BK002 | 制造商:Alpha Wire 功能描述: |
| M3874-BK005 | 制造商:Alpha Wire 功能描述: |
| M3874-BK199 | 制造商:Alpha Wire 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復。