參數(shù)資料
型號(hào)： M37906M6C-XXXFP
元件分類： 微控制器/微處理器
英文描述： 16-BIT, MROM, 20 MHz, MICROCONTROLLER, PDSO42
封裝： 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-42
文件頁(yè)數(shù)： 63/104頁(yè)
文件大小： 995K
代理商： M37906M6C-XXXFP
58
M37906M4C-XXXFP, M37906M4C-XXXSP, M37906M4H-XXXFP
M37906M4H-XXXSP, M37906M6C-XXXFP, M37906M6C-XXXSP
M37906M8C-XXXFP, M37906M8C-XXXSP
PRELIMINAR
Y
Notice:
This
is not
a final
specification.
Som
e param
etric
lim
its are
subject
to change.
16-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
succeedingly.
Once transmission has started, the TEi flag, TIi flag, and CTSi signal
are ignored until data transmission is completed.
Therefore, transmission does not stop until it completes event if, dur-
ing transmission, the TEi flag is cleared to “0” or CTSi input is set to
“1”.
The transmission start condition indicated by TEi flag, TIi flag, and
CTSi is checked while the TENDi signal shown in Figure 63 is “H”.
Therefore, data can be transmitted continuously if the next transmis-
sion data is written in the transmit buffer register and TIi flag is
cleared to “0” before the TENDi signal goes “H”.
Bit 3 (TXEPTYi flag) of UARTi transmit/receive control register 0
changes to “1” at the next cycle just after the TENDi signal goes “H”
and changes to “0” when transmission starts. Therefore, this flag can
be used to determine whether data transmission is completed.
When the TIi flag changes from “0” to “1”, the interrupt request bit of
the UARTi transmit interrupt control register is set to “1”.
Transmission
Transmission is started when bit 0 (TEi flag transmit enable flag) of
UARTi transmit/receive control register 1 is “1”, bit 1 (TIi flag) is “0”,
and CTSi input (in other words, transmit enable signal input from re-
ceiver) is “L.” The TIi flag indicates whether the transmit buffer is
empty or not. It is cleared to “0” when data is written in the transmit
buffer; it is set to “1” when the contents of the transmit buffer register
is transferred to the transmit register.
When all of the transmission conditions are satisfied, transmit data
is transferred to the transmit register, and transmit operation starts.
As shown in Figures 63 and 64, data is output from the TXDi pin with
the stop bit or parity bit specified by bits 4 through 6 of UARTi trans-
mit/receive mode register. The data is output from the least signifi-
cant bit.
When the transmit register becomes empty after the contents has
been transmitted, data is transferred automatically from the transmit
buffer register to the transmit register if the next transmit start condi-
tion is satisfied. Then, the next transmission is performed
Fig. 65 Receive timing example when 8-bit asynchronous communication with no parity and 1 stop bit selected
Start bit
Stop bit
Start bit
D0
D1
D7
Check to be “L” level
Starting at the falling
edge of start bit
Data fetched
fi or fEXT
REi
RXDi
Receive
clock
RIi
RTSi
相關(guān)PDF資料
PDF描述
M37906M8C-XXXFP 16-BIT, MROM, 20 MHz, MICROCONTROLLER, PDSO42
M37906M4H-XXXSP 16-BIT, MROM, 20 MHz, MICROCONTROLLER, PDIP42
M37906M4C-XXXFP 16-BIT, MROM, 20 MHz, MICROCONTROLLER, PDSO42
M37906M8C-XXXFP 16-BIT, MROM, 20 MHz, MICROCONTROLLER, PDSO42
M37906M6C-XXXSP 16-BIT, MROM, 20 MHz, MICROCONTROLLER, PDIP42
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37906M6C-XXXSP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:16-BIT CMOS MICROCOMPUTER
M37906M8C-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:16-BIT CMOS MICROCOMPUTER
M37906M8C-XXXSP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:16-BIT CMOS MICROCOMPUTER
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