参数资料
型号: SAF-C868P-1SGBA
厂商: INFINEON TECHNOLOGIES AG
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 40 MHz, MICROCONTROLLER, PDSO28
封装: PLASTIC, SO-28
文件页数: 35/82页
文件大小: 1252K
代理商: SAF-C868P-1SGBA
C868
Data Sheet
40
V 1.0, 2003-05
Serial Interface (UART)
The serial port is a full duplex port capable of simultaneous transmit and receive
functions. It is also receive-buffered; it can commence reception of a second byte before
a previously-received byte has been read from the receive register. The serial port can
operate in 3 modes as illustrated in Table 10.
For clarification, some terms regarding the difference between “baudrate clock“ and
“baudrate“ should be mentioned.
The serial interface requires a clock rate which is 16 times the baudrate for internal
synchronization. Therefore, the baudrate generators must provide a “baudrate clock“ to
the serial interface which divides it by 16, thereby resulting in the actual “baudrate“.
Table 10
UART Operating Modes
Mode
SCON
Description
SM1
SM0
0
Reserved
1
0
1
8-bit UART, variable baudrate
10 bits are transmitted (through TxD) or received (RxD)
2
1
0
9-bit UART, fixed baudrate
11 bits are transmitted (through TxD) or received (RxD)
3
1
9-bit UART, variable baudrate
Similar to mode 2, except for the variable baudrate.
相关PDF资料
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SAK-C868A-1SGBA 8-BIT, 40 MHz, MICROCONTROLLER, PDSO28
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