參數(shù)資料
型號(hào)： M37702M2B-XXXFP
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
中文描述： 單片16位CMOS微機(jī)
文件頁(yè)數(shù)： 31/59頁(yè)
文件大?。?/td> 811K
代理商： M37702M2B-XXXFP
31
MITSUBISHI MICROCOMPUTERS
M37702M2AXXXFP, M37702M2BXXXFP
M37702S1AFP, M37702S1BFP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
ASYNCHRONOUS SERIAL
COMMUNICATION
Asynchronous serial communication can be performed using 7-,
8-, or 9-bit length data. The operation is the same for all data
lengths. The following is the description for 8-bit asynchronous
communication.
With 8-bit asynchronous communication, the bit 0 of UARTi trans-
mit/receive mode register is “1“, the bit 1 is “0”, and the bit 2 is “1”.
Bit 3 is used to select an internal clock or an external clock. If bit 3
is “0”, an internal clock is selected and if bit 3 is “1”, then external
clock is selected. If an internal clock is selected, the bit 0 (CS
0
)
and bit 1 (CS
1
) of UARTi transmit/receive control register 0 are
used to select the clock source. When an internal clock is selected
for asynchronous serial communication, the CLKi pin can be used
as a normal I/O pin.
The selected internal or external clock is divided by (n +1), then by
16, and passed through a control circuit to create the UART trans-
mission clock or UART receive clock.
Therefore, the transmission speed can be changed by changing
the contents n of the bit rate generator. If the selected clock is an
internal clock fi or an external clock f
EXT
,
Bit Rate = (f
i
or f
EXT
) / {(n
+
1)
16}
Bit 4 is the stop bit length selection bit to select 1 stop bit or 2 stop
bits.
The bit 5 is a selection bit of odd parity or even parity.
In the odd parity mode, the parity bit is adjusted so that the sum of
the 1’s in the data and parity bit is always odd.
In the even parity mode, the parity bit is adjusted so that the sum
of the 1’s in the data and parity bit is always even.
Fig. 40 Transmit timing example when 8-bit asynchronous communication with parity and 1 stop bit is selected
Fig. 41 Transmit timing example when 9-bit asynchronous communication with no parity and 2 stop bits is selected
D
6
D
7
ST
D
1
D
2
D
3
D
4
D
5
P
SP ST
STD
0
D
1
TE
i
(1 / f
1
, or 1 / f
EXT
)
(n + 1)
16
Transmission clock
CTS
i
Write in transmission buffer register
TI
i
T
ENDi
T
X
D
i
T
X
EPTY
i
Transmission register
←
Transmission
buffer register
Stopped because TEi = “0”
Start bit
Parity bit Stop bit
D
0
D
6
D
7
D
1
D
2
D
3
D
4
D
5
P
SP
D
0
TE
i
Transmission clock
TI
i
T
ENDi
T
X
D
i
T
X
EPTY
i
(1 / f
1
or 1 / f
EXT
)
(n + 1)
16
Write in transmission buffer register
Transmission register
Transmission
buffer register
Stopped because
TEi = “0”
ST D
0
D
1
Start bit
Stop Bit Stop Bit
D
6
ST
D
1
D
2
D
3
D
4
D
5
D
8
SP
D
0
D
6
D
7
D
1
D
2
D
3
D
4
D
5
SP
D
0
D
7
SP
SP
D
8
ST
D
2
相關(guān)PDF資料
PDF描述
M37702M2BXXXFP SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M37702M2L-249HP SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M37702S1LGP SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M37708S1LGP SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M37702S1LHP SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37702M2L 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M37702M2L249HP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M37702M2L-249HP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M37702M2L-265HP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M37702M2LXXXGP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*