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SH79F166AP044PR Datasheet(PDF) 77 Page - List of Unclassifed Manufacturers

Part # SH79F166AP044PR
Description  Enhanced 8051 microcontroller with 10-bit ADC
PDF  113 Pages
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Manufacturer  ETC1 [List of Unclassifed Manufacturers]
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SH79F166AP044PR Datasheet(HTML) 77 Page - List of Unclassifed Manufacturers

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SH79F166A
77
任何将SBUF作为目标寄存器的写操作都会启动发送。下一个系统时钟Tx控制块开始发送。数据转换发生在移位时钟的下降
沿,移位寄存器的内容逐次从左往右移位,空位置0。当移位寄存器中的所有8位都发送后,Tx控制模块停止发送操作,然后在
下一个系统时钟的上升沿将TI置1(SCON.1)。
Write to SBUF
D0
D1
D2
D3
D4
D5
D6
D7
RxD
TI
Send Timing of Mode 0
TxD
REN(SCON.4)置1和RI(SCON.0)清0初始化接收。下一个系统时钟启动接收,在移位时钟的上升沿锁存数据,接收转
换寄存器的内容逐次向左移位。当所有8位都接收到接收移位寄存器中后,Rx控制块停止接收,然后在下一个系统时钟的上升沿
上RI置1,直到被软件清0才允许接收。
RxD
D0
D1
D2
D3
D4
D5
D6
D7
RI
Receive Timing of Mode 0
TxD
方式1:8位EUART,可变波特率,异步全双工
方式1提供10位全双工异步通信,10位由一个起始位(逻辑0),8个数据位(低位为第一位),和一个停止位(逻辑1)组
成。在接收时,这8个数据位存储在SBUF中而停止位储存在RB8(SCON.2)中。串行收发波特率为定时器4/2溢出率的1/16(详
见波特率章节)。功能块框图如下图所示:
Timer 4 Overflow
SERIAL
CONTROLLER
TX CLOCK
TX START
TX SHIFT
TI
RI
RX CLOCK
LOAD SBUF
RX START
RX SHIFT
Serial Port Interrupt
CLOCK
SIN
PAROUT
RXD
Read SBUF
Internal
Data Bus
Receive Shift Register
Timer 2 Overflow
1
0
1
0
16
÷
16
÷
1-TO-0
DETECTOR
Write to SBUF
BIT
DETECTOR
D8
SBUF
RB8
SAMPLE
TXD
PARIN
LOAD
CLOCK
SOUT
Internal
Data Bus
Transmit Shift Register
START
D8
TB8
STOP
TCLK
RCLK



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