參數(shù)資料
型號： SAB-C509-LM
廠商： INFINEON TECHNOLOGIES AG
英文描述： DBMM25SN
中文描述： 8位CMOS微控制器
文件頁數(shù)： 50/74頁
文件大小： 1607K
代理商： SAB-C509-LM
Semiconductor Group
49
09.96
C509-L
Serial Interfaces 0 and 1
The C509-L has two serial interfaces which are functionally nearly identical concerning the
asynchronous modes of operation. The two channels are full-duplex, meaning they can transmit
and receive simultaneously. The serial channel 0 is completely compatible with the serial channel
of the C501 (one synchronous mode, three asynchronous modes). Serial channel 1 has the same
functionality in its asynchronous modes, but the synchronous mode and the fixed baud rate UART
mode is missing.
The operating modes of the serial interfaces is illustrated in
table 11
. The possible baudrates can
be calculated using the formulas given in
table 12
.
Table 11
Operating Modes of Serial Interface 0 and 1
Serial
Interface
Mode
S0CON
S1CON
Description
SM0
SM1
SM
0
0
0
0
–
Shift register mode
Serial data enters and exits through R
×
D0;
T
×
D0 outputs the shift clock; 8-bit are
transmitted/received (LSB first); fixed baud rate
1
0
1
–
8-bit UART, variable baud rate
10 bits are transmitted (through T
×
D0) or
received (at R
×
D0)
9-bit UART, fixed baud rate
11 bits are transmitted (through T
×
D0) or
received (at R
×
D0)
9-bit UART, variable baud rate
Like mode 2
2
1
0
–
3
1
1
–
1
A
–
–
0
9-bit UART; variable baud rate
11 bits are transmitted (through T
×
D1) or
received (at R
×
D1)
8-bit UART; variable baud rate
10 bits are transmitted (through T
×
D1) or
received (at R
×
D1)
B
–
–
1
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