參數資料
型號: C505-LM
廠商: SIEMENS AG
元件分類: 8位微控制器
英文描述: 8-Bit CMOS Microcontroller
中文描述: 8位CMOS微控制器
文件頁數: 36/85頁
文件大?。?/td> 335K
代理商: C505-LM
Semiconductor Group
36
1997-12-01
C505 / C505C
C505A / C505CA
Figure 14
Block Diagram of Baud Rate Generation for the Serial Interface
Table 9
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 9
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
MCS02733
Rate
Clock
f
OSC
(SMOD)
Baud
PCON.7
2
(SM0/
SM1)
SCON.7
SCON.6
Only one mode
can be selected
ADCON0.7
(BD)
0
1
0
1
Baud
Rate
Generator
(SRELH
SRELL)
Timer 1
Overflow
Mode 2
Mode 0
Note: The switch configuration shows the reset state.
Mode 3
Mode 1
6
÷
÷
相關PDF資料
PDF描述
C505A-4EM 8-Bit CMOS Microcontroller
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C505CA-2R 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
C505CA-4E 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
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