參數(shù)資料
型號(hào): Q67121-C942
廠商: SIEMENS AG
英文描述: 16-Bit CMOS Single-Chip Microcontroller
中文描述: 16位CMOS單芯片微控制器
文件頁(yè)數(shù): 39/69頁(yè)
文件大小: 1124K
代理商: Q67121-C942
Semiconductor Group
39
1997-07-01
C515C
Figure 15
Block Diagram of Baud Rate Generation for the Serial Interface
Table 8
below lists the values/formulas for the baud rate calculation of the serial interface with its
dependencies of the control bits BD and SMOD.
Table 8
Serial Interface - Baud Rate Dependencies
Serial Interface
Operating Modes
Active Control Bits Baud Rate Calculation
BD
SMOD
Mode 0 (Shift Register)
f
OSC
/ 6
Controlled by timer 1 overflow :
(2
SMOD
×
timer 1 overflow rate) / 32
Controlled by baud rate generator
(2
SMOD
×
f
OSC
) /
(32
×
baud rate generator overflow rate)
f
OSC
/ 32
f
OSC
/ 16
Mode 1 (8-bit UART)
Mode 3 (9-bit UART)
0
X
1
X
Mode 2 (9-bit UART)
0
1
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