參數(shù)資料
型號(hào)： MSM82C51A-2JS
廠商： LAPIS SEMICONDUCTOR CO LTD
元件分類(lèi)： 微控制器/微處理器
英文描述： 1 CHANNEL(S), 64K bps, SERIAL COMM CONTROLLER, PQCC28
封裝： PLASTIC, QFJ-28
文件頁(yè)數(shù)： 3/27頁(yè)
文件大?。?/td> 221K
代理商： MSM82C51A-2JS
10/26
Semiconductor
MSM82C51A-2RS/GS/JS
TXRDY (output terminal)
This is an output terminal which indicates that the MSM82C51A-2 is ready to accept a
transmitted data character. But the terminal is always at low level if CTS = high or the device
was set in “TX disable status” by a command.
Note:
TXRDY status word indicates that transmit data character is receivable,
regardless
of CTS or command.
If the CPU writes a data character, TXRDY will be reset by the leading edge or WR
signal.
TXEMPTY (Output terminal)
This is an output terminal which indicates that the MSM82C51A-2 has transmitted all the
characters and had no data character.
In “synchronous mode,” the terminal is at high level, if transmit data characters are no longer
remaining and sync characters are automatically transmitted. If the CPU writes a data
character, TXEMPTY will be reset by the leading edge of WR signal.
Note : As the transmitter is disabled by setting CTS “High” or command, data written
before disable will be sent out. Then TXD and TXEMPTY will be “High”.
Even if a data is written after disable, that data is not sent out and TXE will be
“High”.After
the transmitter is enabled, it sent out. (Refer to Timing Chart of
Transmitter Control and Flag
Timing)
TXC (Input terminal)
This is a clock input signal which determines the transfer speed of transmitted data.
In “synchronous mode,” the baud rate will be the same as the frequency of TXC.
In “asynchronous mode”, it is possible to select the baud rate factor by mode instruction.
It can be 1, 1/16 or 1/64 the TXC.
The falling edge of TXC sifts the serial data out of the MSM82C51A-2.
RXD (input terminal)
This is a terminal which receives serial data.
RXRDY (Output terminal)
This is a terminal which indicates that the MSM82C51A-2 contains a character that is ready to
READ.
If the CPU reads a data character, RXRDY will be reset by the leading edge of RD signal.
Unless the CPU reads a data character before the next one is received completely, the preceding
data will be lost. In such a case, an overrun error flag status word will be set.
RXC (Input terminal)
This is a clock input signal which determines the transfer speed of received data.
In “synchronous mode,” the baud rate is the same as the frequency of RXC.
In “asynchronous mode,” it is possible to select the baud rate factor by mode instruction.
It can be 1, 1/16, 1/64 the RXC.
相關(guān)PDF資料
PDF描述
MSM82C51A-2GS-K 1 CHANNEL(S), 64K bps, SERIAL COMM CONTROLLER, PDSO32
MSM82C55A-2VJS 24 I/O, PIA-GENERAL PURPOSE, PQCC44
MSM82C55A-2RS 24 I/O, PIA-GENERAL PURPOSE, PDIP40
MSM83C154VGS 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP44
MSM83C154RS 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PDIP40
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MSM82C51A-2RS 制造商:ROHM Semiconductor 功能描述: 制造商:ROHM Semiconductor 功能描述:USART,Programmable multifunction 制造商:ROHM Semiconductor 功能描述:USART, programmable multi-function communication interface
MSM82C53-2 GS-K 制造商:ROHM Semiconductor 功能描述:
MSM82C53-2GS 制造商:OKI 制造商全稱(chēng):OKI electronic componets 功能描述:CMOS PROGRAMMABLE INTERVAL TIMER
MSM82C53-2JS 制造商:OKI 制造商全稱(chēng):OKI electronic componets 功能描述:CMOS PROGRAMMABLE INTERVAL TIMER
MSM82C53-2RS 制造商:ROHM Semiconductor 功能描述:
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